Guffey, Mary Ellen
Essentials of business communication
PWS-Kent, 1988
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Guffey, Mary Ellen
Essentials of business communication
PWS Publishing, 1991
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Voiles, Price R.
Business English essentials / Price R. Voiles
Glencoe, 1993
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From murk to masterpiece: style for business writing
by Geraldine Henze
Richard D. Irwin, 1984
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Levinson, Nan
How to sharpen your business writing skills
[American Management Association;, ], 2000
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