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a list of sources that have never been discussed, or whose reliability should be obvious to most editors; a list of primary, secondary, or tertiary sources; a list of independent or affiliated sources; a list of self-published or traditionally published sources; a representative sample of all sources used on Wikipedia or all sources in existence
All breaking news stories, without exception, are primary sources, and must be treated with caution: see Wikipedia:No original research § Primary, secondary and tertiary sources, Wikipedia:Identifying and using primary sources § Examples of news reports as primary sources.
Posts on Usenet are rarely regarded as reliable sources, because they are easily forged or misrepresented, and many are anonymous or pseudonymous.. One exception is that some authorities on certain topics have written extensively on Usenet, and their writings there are vouched for by them or by other reliable sources.
Ideal sources for these articles include comprehensive reviews in independent, reliable published sources, such as reputable scientific journals, statements and reports from reputable expert bodies, widely recognized standard textbooks and handbooks written by experts in a field, expert-curated databases and reference material, or high-quality ...
Inclusion on the list doesn't automatically mean the absolute truth is on these websites, so always be critical and compare information between different sources. The content of the subsections is alphabetically organized. Please add free online sources if you know some that are missing in this list, but try to keep it relevant and trustworthy.
These are general guidelines, but the topic of reliable sources is a complicated one, and is impossible to fully cover here. You can find more information at Wikipedia:Verifiability and at Wikipedia:Reliable sources. There is also a list of commonly used sources with information on their reliability.
Reliable third-party sources should be the principal reference material for Wikipedia articles, whenever possible. These sources are up-to-date, written purposefully to inform about the subject they are being cited for, and released by a publisher with a reputation for fact-checking and accuracy. [ 2 ]
Once the passage of one or more notability criteria has been verified through independent sources, or through the reliable sources listed explicitly for this purpose in the specific criteria notes, non-independent sources, such as official institutional and professional sources, are widely accepted as reliable sourcing for routine ...