Monroe, Kent B., author
McGraw-Hill, 1979
Buku Teks
Hise, Richard T., author
Winthrop, 1979
Buku Teks
Still, Richard R., author
Prentice-Hall, 1988
Buku Teks
Day, Ralph L.
Richard D. Irwin, 1962
Buku Teks
Mills, Harry, author
[American Management Association, ], 2004
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