Indiana Ngenget, author
Universitas Indonesia, 2007
UI - Tesis (Membership)
Burns, Nancy, author
W.B. Saunders , 1999
Buku Teks
Bettina E. Schmidt, Ingo W. Schroder, editor
Routlegde , 2001
Buku Teks
Sitorus. Friyanka H. D., author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Pratiwi Wandansari, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)