Fraser, John Munro
London, Sir Issac Pitman
Buku Teks
Novela Permatasari
2017
UI - Skripsi (Membership)
Nelson-Jones, Richard
Brooks/Cole , 1990
Buku Teks
Tyas Handayani
Fakultas Psikologi Universitas Indonesia, 1996
UI - Skripsi Membership
Sarrah Hasyim Abdullah
Fakultas Psikologi Universitas Indonesia, 2015
UI - Skripsi (Membership)