Chorafas, Dimitris N.
Reinhold Publishing Corporation, 1958
Buku Teks
American Management Assosiation, Inc. (c.1958), 1958
Buku Teks
Elsevier, 1973
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Cooper, Donald R., author
McGraw-Hil, 2003
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Gummesson, Evert
Sage Publications, Inc., 2000
Buku Teks