Chicago Manual of Style

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

http://www.wisc.edu/writing/Handbook/DocChicago.html

http://www.libs.uga.edu/ref/chicago.html

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

http://citesource.trincoll.edu/chicago/

http://library.williams.edu/citing/styles/chicago1.php