Wilson, Josephine F., author
Thomson/Wadsworth, 2003
Multimedia
Henderson, I. F.
Longman, 1975
Buku Referensi
Garrett, Bob, author
SAGE, 2015
Buku Teks
Indigo Books, 2005
Buku Referensi
edited by Gary R. VandenBos
American Psychologycal Association, 2007
Buku Referensi