Grammar and Style
Dr. Abel Scribe, PhD -- http://www.docstyles.com/index.htm
The Dr. Able Scribe website has a number of guides for various research styles. The one for The Chicago Manual of Style is at http://www.docstyles.com/ctslite.htm.
Purdue University -- http://owl.english.purdue.edu/
Visitors to this site can explore a number of options, including the Online Writing Lab (OWL), which is at http://owl.english.purdue.edu/owl/
Rutgers University -- http://ethnicity.rutgers.edu/~jlynch/Writing/index.html
The author of this web site, Professor Jack Lynch, at Rutgers University, Newark, is preparing an excellent source to explain everything from acronyms to verbals. The explanations are brief, and the dictionary format enables users to find terms with ease.University of the District of Columbia -- http://hkrauthamer.tripod.com/Comma_rules.html
Specifically about commas, this page is a useful aid for anyone having difficulties with comma placement or for those who need a quick refresher course on where commas belong. Additional writing tutorials are available through the home page of the web site: http://hkrauthamer.tripod.com/writingt.htm.
Geoffrey Pullum, "Legal and Illegal Commas" -- http://chronicle.com/blogs/linguafranca/2015/05/13/legal-and-illegal-commas/?cid=at&utm_source=at&utm_medium=en
Citing Sources Using the Chicago Manual of Style and Turabian's Manual for Writers
Below are references to help students understand how to cite references using the Chicago Manual of Style, the condensed version of which is Kate Turabian's Manual for Writers. Students should own a copy of Turabian's work, but the web sites below provide additional perspectives on citation procedures.
Purdue University -- https://owl.english.purdue.edu/owl/resource/717/03/
This is part of Purdue's Online Writing Lab (OWL).
University of California at Berkeley -- http://www.lib.berkeley.edu/instruct/guides/chicago-turabianstyle.pdf
University of Chicago Press
Chicago Manual of Style -- http://www.chicagomanualofstyle.org/tools_citationguide.html
Turabian Guide -- http://www.press.uchicago.edu/books/turabian/turabian_citationguide.html
University of Wisconsin at Madison -- http://writing.wisc.edu/Handbook/DocChicago.html