Harris, James C., author
Oxford University Press, 2006
Buku Teks
Payne, James S., author
Charles Merrill Publishing, 1981
Buku Teks
Artikel Jurnal
Cynthia Rusdian, author
Fakultas Psikologi Universitas Indonesia, 2012
UI - Skripsi (Open)
Cynthia Rusdian, author
Fakultas Psikologi Universitas Indonesia, 2012
UI - Skripsi (Open)