edited by Ronald J. Prinz
Jessica Kingsley, 1991
Buku Teks
Ramsay, Michael C., author
John Wiley & Sons, 2002
Buku Teks
Simeonsson, Rune J., author
Allyn and Bacon, 1986
Buku Teks
editor Ronald J. Prinz
Jessica Kingsley Publishers, 1991
Buku Referensi
Lidz, Carol Schneider, author
John Wiley & Sons, 2003
Buku Teks