Wikipedia has several tools that may be useful in checking for copyright problems.
Earwig's Copyvio Detector will scan an article against the internet, excluding known mirrors (though not less common ones), and against its external links. It displays a percentage of text copied from the orginal source and highlights copies.
The Duplication Detector will compare an article with another document, online or uploaded (including pdfs), looking for text string duplication.
Wikiblame. Accessible under the "history" tab of every page on Wikipedia as "Revision history search", this tool can be useful in determining when a run of text first entered an article.
(talk page stalker) Use a chapter or section title if available, if not include a short quote that would allow someone to locate the relevant text by searching. Nikkimaria (talk) 04:36, 3 July 2024 (UTC) ::Thank you for helping, Nikkimaria. Have the best summer possible. Neonorange
Hey Phil, good to hear from you. What Nikki says. If you're using Template:Sfn there's a field for "location" that's used for chapter headings or numbers. If written freeform as I do, same thing. Re Apple books, thanks for the heads up. Have you checked out the Wikipedia:The Wikipedia Library? It's really amazing these days. I downloaded some newly written books about Hemingway recently and was seriously pleased.
