Tribe, Laurence H.
Abortion the clash of absolutes
W.W. Norton, 1990
 Buku Teks
Burnison, Gary, 1961-
The twelve absolutes of leadership
McGraw-Hill, 2012
 Buku Teks SO
Kailimang, Lukas
Representational flexibility in the second year of life : an exploratory study of the eye toy
Fakultas Psikologi Universitas Indonesia, 2005
 UI - Skripsi Membership
Carson, Robert C.
Abnormal psychology and modern life
Longman, 1997
 Buku Teks SO
Personality disorders in modern life
John Wiley & Sons, 2004
 Buku Teks SO