Peters, Carl
Irwin Professional, 1997
Buku Teks
Goodman, Michael
American Psychiatic Press , 1996
Buku Teks
Ade Ibadurrohman
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis Membership
edited by Harold Leitenberg
Plenum Press, 1990
Buku Referensi
Hellier, Charles J.
McGraw-Hill, 2001
Buku Teks SO