Swan, Terry, author
Guardian Books, 2006
Buku Teks
Paloutzian, Raymond F., 1945-, author
Guilford Press, 2017
Buku Teks
edited by Raymond F. Paloutzion, Crystal L. Park
Guilford Press, 2013
Buku Teks
Wulff, David M., 1940-
Wiley, 1991
Buku Teks
editor by Raymond F. Paloution
The guilford press, , 2005
Buku Teks