Boulton, William R., author
Macmillan, 1984
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Hax, Arnoldo C., author
Prentice-Hall, 1984
Buku Teks
Johnston, Robert E., author
American Management Association;, 2013
eBooks
Johnston, Robert E., author
American Management Association, 2003
eBooks
Dess, Gregory G., author
McGraw-Hill/Irwin, 2005
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