Drucker, Peter Ferdinand, 1909-2005
The practice of management
Harper & Row, 1945
 Buku Teks
Drucher, Peter F
practice-of management.
New York: H. Harper & Row, 1954
 Buku Teks
Drucker, Peter Ferdinand, 1909-2005
The practice of management
Harper & Brothers, 1954
 Buku Teks
Gallagher, Timothy J.
Financial management : principles and practice
Prentice-Hall, 1997
 Buku Teks
Hattersley, Michael E.
Management communication: principles and practice
McGraw-Hill, 1997
 Buku Teks SO