# Chicago author-notes 18th edition?

**URL:** <https://discourse.citationstyles.org/t/chicago-author-notes-18th-edition/1877>\
**Category:** CSL Usage\
**Created:** [January 6, 2025, 7:55pm UTC](https://discourse.citationstyles.org/t/chicago-author-notes-18th-edition/1877 "2025-01-06T19:55:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gwright](https://avatars.discourse-cdn.com/v4/letter/g/ecc23a/32.png) [@gwright](https://discourse.citationstyles.org/u/gwright)\
**Post date:** [January 6, 2025, 7:55pm UTC](https://discourse.citationstyles.org/t/chicago-author-notes-18th-edition/1877/1 "2025-01-06T19:55:55Z")

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Are there any plans to support Chicago 18 (released in September 2024)?

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**Author:** ![Ric](https://avatars.discourse-cdn.com/v4/letter/r/c77e96/32.png) [@Ric](https://discourse.citationstyles.org/u/Ric)\
**Post date:** [February 19, 2025, 1:59pm UTC](https://discourse.citationstyles.org/t/chicago-author-notes-18th-edition/1877/2 "2025-02-19T13:59:41Z")

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Also interested in this information.

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**Author:** ![Andrew\_Dunning](https://yyz1.discourse-cdn.com/flex029/user_avatar/discourse.citationstyles.org/andrew_dunning/32/433_2.png) [@Andrew\_Dunning](https://discourse.citationstyles.org/u/Andrew_Dunning)\
**Post date:** [February 24, 2025, 5:59pm UTC](https://discourse.citationstyles.org/t/chicago-author-notes-18th-edition/1877/3 "2025-02-24T17:59:08Z")

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It’s under development here:

> <https://github.com/citation-style-language/styles/pull/7424>
>
> Update Chicago Manual of Style definitions to the 18th edition. These are the ke…y areas of focus from \[What’s New in the 18th Edition\](https://www.chicagomanualofstyle.org/help-tools/what-s-new.html):
> 
> \- 13.23, 13.107. Up to six authors are now listed in a bibliography or reference list entry; if more than six, only the first three are listed, followed by “et al.” In a shortened note or an author-date text citation, up to two authors are now listed; if more than two, only the first is listed, followed by “et al.”
> \- 13.26. A month or season can now usually be omitted in citations of journal articles.
> \- 13.72, 13.113. Chicago now prefers repeating the name of the author(s) rather than using a 3-em dash to stand in for repeated names in bibliographies or reference lists.
> \- 14.8. The page range for a cited chapter in an edited book is no longer required in a bibliography or reference list entry (though a page range is still required for most journal articles).
> \- 14.30. A place of publication is no longer required in citations of books. (The CSL implementation is not complete, since for books published after 1900, the place of publication only is to be provided, but there is no way to test this in CSL 1.0.2.)
> \- 14.89. Author-date reference list entries that include a month and day (as for a newspaper article) do not need to repeat the year with the month and day.
> \- 14.75, 14.76. Updated and expanded guidance on citing ahead-of-print and forthcoming journal articles as well as preprints.
> \- 14.157. Updated and expanded guidance on citing databases and datasets.
> 
> Closes #7389.
> 
> Other enhancements:
> 
> \- Support \`director\` and \`original-title\` variables, and \`pamphlet\` type: closes #7120.
> \- Render the title of a multivolume work in all locations: closes #7413.
> \- Replace 'Public Law No.' prefix with \`authority\` variable: closes #4343.
> \- Sources with no author displaying the container title first but sorting by item title: closes #6105.
> \- Consistently implement the guidance of 14.104, 'Citing web pages and websites', using the adapted form provided for use with a bibliography entry.
> \- Fix repeated date with websites in author–date.
> \- Use \`archive\` variable for the potential name of a database in 14.60, 'Books consulted online' (cf. 14.72).
> \- Use \`medium\` variable for the name of an e-book type in 14.58, 'Downloadable ebook formats and audiobooks'.
> 
> The macros are reordered to implement consistently the organizational scheme of providing macros in their order of occurrence in the citations and bibliography, with dependent macros placed above the macro that first refers to them. Affixes are replaced with delimiters wherever possible.
> 
> The author–date style now uses the full-note style as a template, resolving a number of inconsistencies in behaviour between the two. In the full-note style, the \`-note\` macros consistently follow the same structure as their counterparts for the bibliography.

This is however entirely a volunteer effort and it may be awhile yet before it’s ready. There are also some issues with CSL itself (e.g. the lack of support for testing dates) meaning that it won’t be perfect.