Carr, Albert Z., author
New American Library, 1968
Buku Teks
McHugh, Donald E., author
[American Management Association;, ], 2004
eBooks
Rogers, David J., author
Charles Schribder's Sons, 1987
Buku Teks
Prerau, Sydney, author
McGraw-Hill, 1960
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harvard Business Review Book, 2008
Buku Teks