Kellerman, Henry
Springer, 2010
Buku Teks SO
edited by Gregory J. Boyle, Donald H. Saklofske, Gerald Matthews
Academic Press, 2015
eBooks
Groth-Marnat, Gary
John Wiley & Sons, 1990
Buku Referensi
Groth-Marnat, Gary
John Wiley & Sons, 2016
Buku Teks SO
edited by John P. Robinson, Phillip R. Shaver, Lawrence S. Wrightsman
Academic Press, 1991
Buku Teks SO