Sembiring, Ejasa, author
1994
UI - Tesis (Membership)
Rose Mini Adi Prianto, author
Fakultas Psikologi Universitas Indonesia, 2000
UI - Laporan Penelitian
Sutadji, author
Fakultas Psikologi Universitas Indonesia, 1993
UI - Tesis (Membership)
T. Bambang Sugema, author
Fakultas Psikologi Universitas Indonesia, 1997
UI - Tesis (Membership)
Agus Suryawan, author
1998
UI - Tesis (Membership)