Cohen, Ronald Jay, author
McGraw-Hill, 2005
Buku Teks
Kaplan, Robert M., author
AIPI Publication, 2007
Buku Teks
Braaten, Ellen, author
Guilford Press, 2004
Buku Teks
edited by C.H. Jenkins
Fairmont Press, 1998
Buku Teks
Hoffman, Edward, author
McGraw-Hill, 2002
Buku Teks