Haywood, Roger, 1939-
McGraw-Hill , 1984
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Cutlip, Scott M.
Indeks, 2005
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Dilenschneider, Robert L.
American Management Association, 2010
eBooks
Yosal Iriantara
Simbiosa Rekatama Media, 2005
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Zollo, Burt
McGraw-Hill Book, 1967
Buku Teks