Artikel Jurnal
Ormrod, Jeanne Ellis, author
Erlangga, 2008
Buku Teks
Hudharto Hariseno, author
Fakultas Psikologi Universitas Indonesia, 2012
UI - Skripsi (Open)
Ali Nina Liche Seniati, author
UI-Press, 2009
UI - Pidato
Martha Jaya, author
1997
UI - Skripsi (Membership)