Nadeak, Hasoloan, author
1996
UI - Tesis (Membership)
Mohammad Ichsan, author
2008
UI - Tesis (Open)
Panjaitan, Juniarta L., author
Fakultas Psikologi Universitas Indonesia, 2003
UI - Tesis (Membership)
Siregar, Safinah Nidiasti, author
Fakultas Psikologi Universitas Indonesia, 2002
UI - Tesis (Membership)
Maria Ulfa, author
2013
UI - Tesis (Membership)