edited by Carolyn Uhlinger Shantz and Wiliard W. Hartup
Cambridge , 1995
Buku Teks
Bergin, Christi Crosby
Wadsworth and Cengage Learning, 2012
Buku Referensi
edited by Ross Vasta
Jessica Kingsley, c1992
Buku Teks
edited by Max Sugar
Brunner/Mazel Publishers, 1993
Buku Teks SO
Weis, Robert
Sage, 2008
Buku Teks