Lyn Dupré. Bugs in Writing. Addison Wesley, ISGM 0-201-60019-6. (Some online notes are at http://www.ai.sri.com/~wilkins/dupre.html. )
Truss, Lynne 2004. Eats, Shoots & Leaves. Gotham, ISBN 1592400876.
Mark Zobel. Writing for Computer Science. Springer 1997. ISBN 9-813-08322-0.
Henry Watson Fowler. The New Fowler's Modern English Usage, R.W. Burchfield (Editor), Oxford, 2000.
William Zinsser. On Writing Well. Harpercollins, 1994.
David A. McMurrey and Joanne Buckley. A Writer's Handbook for Engineers. Thompson, 2008.
Mary-Clair van Leunen, A Handbook for Scholars, 2nd Ed, Oxford University Press, 1992. Some online notes are at http://www.cse.uu.nl/docs/tandt/html/Scholars/.
Donald E. Knuth, Tracy Larrabee, and Paul M. Robers, Mathematical Writing. MAA Notes Number 14, The Mathematical Association of America, 1989.
William Strunk, Jr. and E. B. White. The Elements of Style. Allyn and Bacon, 1995. You can find versions of this text on the web.)
Nichoals Higham, Handbook of Writing for the Mathematical Sciences, SIAM, 1993.
Robert I. Berkman. Find It Fast. Harper Perennial, 1997.
Elizabeth Castro. HTML for the World Wide Web, 4th Ed.: Visual Quickstart Guide, Peachpit Press, 2000.
Gary Blake and Robert W. Bly, The Elements of Technical Writing, Macmillan, 1993.
Edward Tufte. The Visual Display of Quantitative Information, Graphics Press, 1983.
Other Resources:
Merriam-Webster Style Guide on Commas
Barry Tarshis on Commas
Steven F. Freeman