Ashton, Michael C.
Individual differences and personality
Academic Press, 2013
 eBooks
Mahoney, Bere
Personality and individual differences
Learning Matters, 2011
 Buku Teks
Personality social skill, and psychopathology: an individual differences approach
edited by David G. Gilbert and James J. Connolly
Plenum Press, c1991
 Buku Teks
Burger, Jerry M.
Introduction to personality
Wadsworth and Cengage Learning, 2011
 Buku Teks
Viaud, Gaston
Intelligence: its evolution and forms
Hutchirson, 1968
 Buku Teks