How reliable is Wikipedia?
Wikipedia articles should be written in a neutral style and should cite appropriate sources. You will see the phrase  where a statement is being made on a Wikipedia page that needs to be backed up by reference to a source.
Citation Hunt is a neat tool that helps to find missing citations on Wikipedia. You can then search for an appropriate source to use to update the article.
How many citations can you fix in 10 minutes?
- Login to Wikipedia
- Make sure you have the Visual Editor enabled
- Click Preferences in the menu at the top right of the screen.
- Select the Editing tab
- In the Editor section, uncheck Temporarily disable the visual editor while it is in beta
- In Editing Mode, choose Show me both editor tabs.
- Go to Citation Hunt
- Find a snippet that needs a citation (you can restrict the search to specific categories – type into the box under the buttons) and click I’ve got this! to open the Wikipedia page
- Do some searching on the web until you find a good quality, reliable source. Remember – no fake news!
- Edit the Wikipedia article and click to insert a reference at the appropriate point in the article, replacing the  text.
- Save the article.
- Go back to Citation Hunt and find another article to fix!
- To future proof your citation link, you can archive the link at the Internet Archive first.
- Remember that the Daily Mail is not trusted as as a reliable source on Wikipedia.
- Watch out to see your edit appear on the screen of the Listen to Wikipedia website.
- Introduction to referencing with VisualEditor (Wikipedia)
- 5 min video tutorial explaining Citation Hunt
- Add an Open Access reference link to a pay-walled reference link from the suggestions provided by OAbot.
- Wikipedia links to hundreds of thousands of paywalled sources. Our community does not prohibit or even discourage citing paywalled sources, but at the same time there is absolutely no prohibition on surfacing open access (OA) versions right alongside those citations. Indeed, a good citation will have as much information as possible to let the reader find (and use) it in the way that is easiest for them. Read more about OABot here.
- OABot Logo CC-BY-SA Doug Dworkin
The Primary Sources tool
- Try the Wikidata Game – Primary Sources. Check if a third party source can be used a reference on a Wikidata item by clicking yes or no.
(By futureatlas.com (originally posted to Flickr as "Citation needed") [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons)