Mundhenk, Robert T.
Contact: a guide to writing skills
Houghton Mifflin, 1978
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Flesch, Rudolf
How to be brief : an index to simple writing
Harper & Row Publishers, 1962
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McCrimmon, James W.
Writing with a purpose
Houghton Mifflin, 1984
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Seyler, Dorothy U.
Read, reason, write
McGraw-Hill, 1999
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Booth, Wayne C.
The Harper & Row rethoric: writing as thinking, thinking as writing
Harper & Row, 1987
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