Hendriyani, author
Fakultas Psikologi Universitas Indonesia, 2005
UI - Tesis Membership
Suvorov, Ierofei Fedorovich, author
Pradnya Paramita, 1977
Buku Teks
Widodo Setio Pamuji, author
2015
UI - Tesis (Membership)
Artikel Jurnal
Carlson, Richard, 1961-, author
Gramedia Pustaka Utama, 2002
Buku Teks