Bailey, Edward P.
Writing & speaking at work: a practical guide for business communication
Prentice-Hall, 2002
 Buku Teks SO
Pugh, David G.
Powerful proposals: how to give your business the winning edge
American Management Association;, 2005
 eBooks
Sant, Tom
The language of success : business writing that informs, persuades, and gets results
American Management Association, 2008
 eBooks
Business Communication
Holt, Rinehart and Winston of Canada, Limited, 1988
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Shurter, Robert L.
Written communication in business
McGraw-Hill, 1957
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