Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Row, 1945
Buku Teks
Drucher, Peter F
New York: H. Harper & Row, 1954
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Brothers, 1954
Buku Teks
Fitzsimmons, James A., author
2004
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Shoman, Martin L., author
McGraw-Hill, 1983
Buku Teks