Irmansyah, author
2001
UI - Tesis Membership
Hendarti Permono, author
Universitas Indonesia, 1993
UI - Tesis Membership
Artikel Jurnal
Zul Arsiah, author
Fakultas Psikologi Universitas Indonesia, 2005
UI - Tesis Membership
Fakultas Psikologi Universitas Indonesia, 1990
UI - Skripsi Membership