Lindsay, David, author
Longman, 1995
Buku Teks
Alley, Michael
Springer-Verlag, 1996
Buku Teks
Arief Suadi, author
BPFE-Yogyakarta, 1995
Buku Teks
Murray, Rowena
Open University Press, 2002
Buku Teks
Sutrisno Hadi, author
Yayasan penerbitan Fakultas Psikologi UGM, 1986
Buku Teks