Jennings, Eugene E.
N.Y. Harper & Brothers Publishers , 1960
Buku Teks
Hughes, Richard L., author
McGraw-Hill, 2002
Buku Teks
Bellows, Roger
Prentice-Hall, 1959
Buku Teks
Urwick, Lyndall F., author
Pitman Publishing Corporation , 1958
Buku Teks
Kouzer, James M., author
Jossey-Bass, 2006
Buku Teks