Wendy Belcher is a former editor who used to run academic writing workshops; she is currently professor of Comparative Literature and African American Studies at Princeton University.

• http://www.chicagomanualofstyle.org/home.html
• http://www.chicagomanualofstyle.org/qanda/latest.html
• http://www.chicagomanualofstyle.org/tools_citationguide.html
• http://cmosshoptalk.org/

Monash University in Australia has a useful site that gives basic information about many referencing styles.

These blogs run regularly in The Chronicle of Higher Education and consider interesting problems of English expression.

• An article from the BBC about the importance of correct spelling.
• Improper use of commas cost some people a lot of money.
• Scientific style and the use of apostrophes.
• The importance of newspaper style.
• Some grammar rules to remember...or forget.