Universitas Indonesia, 1998
UI - Skripsi (Membership)
Sembiring, Ejasa, author
1994
UI - Tesis (Membership)
Sutadji, author
Fakultas Psikologi Universitas Indonesia, 1993
UI - Tesis (Membership)
Makmur, author
Universitas Indonesia, 2002
UI - Tesis (Membership)
Titin Siswantining, author
Universitas Indonesia, 2001
UI - Laporan Penelitian