Wikipedia's Reliable Sources Policy: What Counts (and What Doesn't)
Wikipedia editors remove content every day — not because it is false, but because it cannot be verified through sources Wikipedia trusts. Understanding what sources does Wikipedia accept is the single most important skill for anyone trying to build or protect a Wikipedia presence.
The #1 reason content gets removed — and it's not accuracy
Most people assume Wikipedia editors remove content because it is wrong. In practice, the far more common reason is sourcing. An editor can look at a paragraph that is entirely accurate and still delete it if the citation behind it does not meet Wikipedia's reliability standard. The content may be true. The source may be real. But if that source does not satisfy WP:RS — Wikipedia's reliable sources policy — the text is gone.
This is the dynamic that surprises executives and communications teams most often. They produce a carefully worded paragraph about a company milestone, link it to a press release, and watch it removed within hours. The milestone happened. The press release is real. But the source fails Wikipedia's independence test, and independent sourcing is the foundation of everything.
What Wikipedia means by “reliable sources”
Wikipedia's sources policy (WP:RS) defines a reliable source using three overlapping criteria. A source must be editorially controlled — meaning a human editor with accountability reviewed the content before it was published. It must be published — meaning it exists in a stable, verifiable form that others can access and check. And it must be independent — meaning it has no financial or organisational relationship with the subject it covers.
A recognised editorial process with named editors, fact-checkers, or peer reviewers who are accountable for what is published.
Available in a stable, citable format — in print, in a digital archive, or through a recognised institutional repository.
No material connection to the subject. The source should have no financial, organizational, or personal stake in how the subject is portrayed.
The phrase “Wikipedia reliable sources” is often misunderstood to mean “reputable sources,” but reputation is not the standard. A highly reputable company blog still fails WP:RS because it is not independent. A relatively obscure academic journal may pass easily because it has rigorous peer review and no connection to the subject.
What counts as a reliable source
Wikipedia editors broadly accept the following categories when the content meets the independence and editorial-control tests.
- Major newspapers and wire services
The New York Times, Financial Times, Reuters, Associated Press, The Guardian, Bloomberg, and equivalent national mastheads. Regional newspapers of record also qualify for locally scoped claims.
- Academic journals with peer review
Published research in peer-reviewed journals is among the strongest possible citation for factual claims. The journal need not be prestigious — peer review itself is the signal.
- Books from established publishers
Non-fiction books published by recognised academic presses or major commercial publishers. Self-published books — regardless of how credible the author — do not qualify.
- Trade publications and established magazines
Industry outlets with editorial staff, fact-checking processes, and a history of independent reporting. Examples include Wired, Forbes (editorial coverage only — not contributor columns), The Economist, and sector-specific trade journals.
What doesn't count
The following source types are routinely rejected by Wikipedia editors, and citations to them are frequently stripped from articles even when the underlying facts are true.
Press releases and company newsrooms
These fail the independence test entirely. A company writing about itself — even through a third-party wire like PR Newswire or Business Wire — is not an independent source under WP:RS. This is the most common sourcing error on executive and company pages.
Company websites and official social media
Official websites, LinkedIn profiles, Twitter/X accounts, and Instagram bios are primary sources and cannot establish facts independently. They can be cited for limited purposes — like confirming what a company says its own mission is — but not to support biographical claims or verify achievements.
Self-published content and personal blogs
Medium posts, Substack newsletters, personal websites, and self-published ebooks fail the editorial control test. There is no independent editorial process, no accountability, and no verification — regardless of how credible or well-known the author is.
Wikipedia itself
Wikipedia articles cannot be used as sources within Wikipedia. This creates a circular reference and violates the original research policy. Any claim in a Wikipedia article must trace back to an external, qualifying source — not to another Wikipedia page.
Why this matters for executives and brands
A Wikipedia page is only as complete as the sourcing behind it. If an executive has achieved significant things — led an acquisition, launched a product, built a team — but those achievements have only been covered in press releases and company announcements, Wikipedia cannot include them. That information simply does not exist from Wikipedia's perspective.
The practical consequence is an incomplete Wikipedia page. Investors reading a CEO's page during due diligence see a thinner biography than the subject deserves. Journalists find a page that seems sparse and decide there is little to report on. Analysts doing background checks find a page tagged with maintenance notices asking for better sourcing. All of this is downstream of the sourcing gap — not the achievement gap.
For brands, the effect is the same. A company with a strong press release history but thin independent press coverage will find that Wikipedia's article about them feels skeletal compared to competitors who have been covered extensively in trade publications. Wikipedia does not care about the volume of company-generated content. It only counts the independent kind. This sourcing gap also directly affects Wikipedia's notability requirements — a subject cannot maintain a page if the sourcing that established notability was never strong enough to withstand scrutiny.
How Notable builds a sourcing strategy before editing
Before Notable writes a single sentence on Wikipedia, we audit the sourcing landscape. This is the step most in-house teams skip — and the reason most in-house Wikipedia efforts fail.
- Source inventory: we identify every piece of existing coverage in qualifying outlets — newspaper profiles, trade coverage, academic citations, analyst mentions — and assess each against WP:RS criteria.
- Source mapping: we match qualifying sources to specific facts and claims. Each assertion that will appear in the article needs a corresponding citation that will survive editor scrutiny.
- Gap identification: we flag achievements or milestones that lack qualifying coverage, and assess whether independent press exists elsewhere that editors haven't found yet.
- Sourcing strategy: for executives with partial coverage, we outline which types of press coverage would strengthen the sourcing base — giving communications teams a concrete brief for earned media efforts.
- Citation formatting: we prepare references in the format Wikipedia expects, reducing the likelihood that technically valid sources are rejected on formatting grounds.
The goal is to arrive at the Wikipedia editing stage with a citation library that is already compliant — so that edits are added with strong sources from the start, rather than being added and then stripped because the sourcing was afterthought. Wikipedia editors are experienced at identifying the difference. For a complete walkthrough of the editing process itself — Talk page requests, edit templates, and what triggers a revert — see our guide on how to fix your Wikipedia page.
Find out if your sourcing will hold up on Wikipedia
Not sure whether your existing press coverage qualifies under WP:RS? We will audit your sourcing landscape, identify gaps, and send you a written assessment at no cost.
Notable provides policy-compliant Wikipedia auditing, editing support, and ongoing monitoring for executives, companies, and PR agencies. All work is conducted under full disclosure in accordance with Wikipedia's Terms of Use.