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1
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2
Production and operations : English language teaching /
Published 1991“…New York : Prentice Hall International,…”
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3
Social contacts : materials for developing listening and speaking skills in business and social contexts / [kaset]
Published 1990“…New York : Prentice Hall International,…”
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4
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5
Language reference for business English : grammar, functions and communication skills /
Published 1992“…New York : Prentice Hall International,…”
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6
Selling : a behavioral science approach /
Published 1988“…New York : Prentice-Hall International,…”