edited by George Kao; translation by Pearl Buck
Sterling Publishing, 1974
Buku Teks SO
Sari Endahwarni
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia , 1990
UI - Tesis Membership
edited by Edwin Seaver
World Pub., 1948
Buku Teks SO
James Danandjaja
Pustaka Sinar Harapan, 1999
Buku Teks SO
Simanjuntak, Renard
Fakultas Psikologi Universitas Indonesia, 1998
UI - Skripsi Membership