Hubbard, L. Ron, 1911-1986
Philosopher &​ founder : rediscovery of the human soul
Bridge Publications, Inc., 2012
 Buku Referensi
Bono, Edward de
Tactics : the art and science of success
Fontana, 1991
 Buku Teks
Albrecht, Karl, 1941-
Social intelligence: the new science of success
Jossey-Bass, 2006
 Buku Teks
DuBrin, Andrew J.
Human relations for career and personal success
Reston Publishing Company, 1983
 Buku Teks
Phillips, Jean
Organizational behavior : tools for success
South-Western Cengage Learning, 2012
 Buku Teks