Kurtines, William M., author
UI-Press, 1992
Buku Teks
[publisher not identified], [date of publication not identified]
Buku Teks
Sri Purwanti, author
Fakultas Psikologi Universitas Indonesia, 2010
UI - Tesis (Membership)
Nasution, Zainuddin, author
2005
UI - Tesis (Membership)
Dewi Kania, author
1990
UI - Skripsi (Membership)