The Chicago Manual of Style was first published in 1906 and for a century has been the most used style guide by editors, publishers, and writers. Any book you submit for publication will be edited by a publishing team using the CMOS.

For more information see:

https://en.wikipedia.org/wiki/The_Chicago_Manual_of_Style

http://www.chicagomanualofstyle.org/home.html

http://www.chicagomanualofstyle.org/tools_citationguide.html

https://www.scribendi.com/advice/an_introduction_to_the_chicago_manual_of_style.en.html

https://owl.english.purdue.edu/owl/resource/717/01/

https://www.amazon.com/Chicago-Manual-Style-16th/dp/0226104206

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Wolfenshire, Moderator/Community Leader