Bagley, Edward R., author
Amacom, 1975
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Truman Talley Books/Plume, 1992
Buku Teks
Stephens, Mitchell, author
Coloumbia University Press , 2014
Buku Teks
Johansen, Robert, author
McGraw-Hill , 1984
Buku Teks
edited by Alan Clapton
Institution of Engineering and Technology, 2008
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