Category:CS1 errors: ISBN date

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This is a tracking category for book and encyclopedia citations implemented with {{citation}} templates and for book and encyclopedia citations implemented with {{cite book}} and {{cite encyclopedia}} that have |isbn= and when the publication date is before 1965.

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ISBN / Date incompatibility – this error message hidden by default

ISBNs were created c. 1965. Books published before that date will not have been issued an ISBN. However, reissues of pre-ISBN publications are issued ISBNs, even barring the publication of a new edition. Consider double-checking whether the ISBN is valid before removing it.

To resolve this error:

Remove the ISBN when citing a source published before 1965.
- If the cited edition or reissue of the book was published after 1965, ensure that |date= or |year= has the correct publication year. The reissue date is typically available by querying WorldCat with the reissue's ISBN. Adding |orig-date= may be appropriate in such cases; e.g., |orig-date=1st Pub. 1929.

Pages with this error are automatically placed in Category:CS1 errors: ISBN date.^[a]

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^ Pages in the Category talk, Draft talk, File talk, Help talk, MediaWiki talk, Module talk, Portal talk, Talk, Template talk, User, User talk, and Wikipedia talk namespaces are not included in the tracking categories. In addition, pages with names matching the patterns '/[Ss]andbox', '/[Tt]estcases', '/[^/]*[Ll]og', and '/[Aa]rchive' are not included in the tracking categories.

Pages in category "CS1 errors: ISBN date"

The following 200 pages are in this category, out of approximately 45,441 total. This list may not reflect recent changes.

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Media in category "CS1 errors: ISBN date"

The following 2 files are in this category, out of 2 total.

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[categories-1] Pages in the Category talk, Draft talk, File talk, Help talk, MediaWiki talk, Module talk, Portal talk, Talk, Template talk, User, User talk, and Wikipedia talk namespaces are not included in the tracking categories. In addition, pages with names matching the patterns '/[Ss]andbox', '/[Tt]estcases', '/[^/]*[Ll]og', and '/[Aa]rchive' are not included in the tracking categories.

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