edited by Carolyn Uhlinger Shantz and Wiliard W. Hartup
Cambridge , 1995
Buku Teks
Pressley, Michael
Guilford Press, 2007
Buku Teks
Rice, F. Philip
Pearson, 2008
Buku Teks SO
Rice, F. Philip
Pearson, 2005
Buku Teks SO
Bergin, Christi Crosby
Wadsworth and Cengage Learning, 2012
Buku Referensi