Corey, Gerald, author
Cengage Learning, 2017
Buku Teks
Heidi Gerard Kaduson, Charles E. Schaefer, editor
Guilford Press, 2000
Buku Teks
Craig Haen, editor
Routledge, 2011
Buku Teks
Howard, George S.
Jossey-Bass, 1987
Buku Teks
Sommers-Flanagan, John, author
John Wiley & Sons, 2012
Buku Teks