Heyster, Sis
Balai Pustaka, 1965
Buku Teks
edited by Cecilia A. Essau, Franz Petermann
Routledge, 2001
Buku Teks
Amry Muhaimin Ramadhan, author
Fakultas Psikologi Universitas Indonesia, 2018
UI - Skripsi (Membership)
Nindyastuti Erika Pratiwi, author
Fakultas Psikologi Universitas Indonesia, 2009
UI - Skripsi (Open)
Nandi, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Skripsi (Membership)