Stapleton, James F.
Erlangga, 2003
Buku Teks
Carr, Albert Z.
New American Library, 1968
Buku Teks
Rogers, David J.
Charles Schribder's Sons, 1987
Buku Teks
Drucker, Peter Ferdinand, 1909-2005
Harvard Business Review Book, 2008
Buku Teks
Pearson, Barrie
Mercurry, 1991
Buku Teks