Mulder, Niels, author
Pustaka Sinar Harapan, 1985
Buku Teks
Arini Pradewi Putri, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Cervone, Daniel, author
Salemba Humanika, 2011
Buku Teks
Littauer, Florence, author
Binarupa Aksara, 1995
Buku Teks
Henny Heryatni, author
2004
UI - Skripsi (Membership)