Proofreading Links
Here are various sources and references that I have found useful for proofreading:
The Associated Press Online
Modern Language Association Online
American Psychological Association Online
...see APA Style in this regard
The Chicago Manual of Style Online
...see the Chicago-Style Quick Citation Guide
The American Heritage Book of English Usage. 1996
The Guide to Grammar and Writing
(Capital Community College Foundation)
Tina Blue's Grammar and Usage for the Non-Expert
Merriam-Webster OnLine -- Dictionary and Thesaurus
Many of these sources are almost universal in nature and scope, but little harm will come from my mentioning them anyway.
Besides, I shudder at the (probably true) thought that someone visiting might not be familiar with the above discipline-standard sources.
The other sources are listed for their ease of use, comprehensive aspirations, or well-targeted material. Unless one is very well-informed of English grammar and syntax, I recommend a thorough perusal; the material superbly filters out areas of relative ignorance.
