Cutts, Martin
The plain english guide : guide to write clearly and communicate better
Oxford University Press, 1995
 Buku Teks
Angell, David
The elements of e-mail style: communicate effectively via electronic mail / David Angell, Brent Heslop
Addison-Wesley Publishing Company, Inc., 1994
 Buku Teks
Dobson, Ann
How to Communicate at work
grolier international, 1999
 Buku Teks
Style
Fayetteville : University of Arkansas
 Majalah, Jurnal, Buletin
Ripple, G. Garry
Do-it write
Octameron, 2001
 Buku Teks