Hinsie, Leland E., author
Oxford University Press, 1960
Buku Referensi
Wilson, Holly Skodol, author
Addison-Wesley, 1983
Buku Teks
Wilson, Holly Skodol, author
Addison-Wesley, 1979
Buku Teks
Keltner, Norman L., author
Mosby, 2002
Buku Teks
Keltner, Norman L., author
Mosby, 1999
Buku Teks