David McMurrey’s On-Line Text at http://www.io.com/~hcexres

Revising Business Prose, Richard R. Lanham, Charles Scribners Sons, 1999

http://www.web.net/~plain/PlainTrain/

possibly, http://www.blm.gov/nhp/NPR/handbk_01.html

http://webster.commnet.edu/grammar/index.htm>

supplementary photocopied materials

a videotape