Withers, Bill, author
American Management Association, 2003
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edited by Richard Edwards
Routledge, 1993
Buku Teks
Hart, Lois B, author
AMACOM, 2005
Buku Teks
Hart, Lois B., author
[American Management Association;, ], 2005
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Paravina, Rade D.
Elsevier Mosby, 2004
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