Zollo, Burt
McGraw-Hill Book, 1967
Buku Teks
Onggo, Bob Julius, author
Elex Media Komputindo, 2004
Buku Teks
Coulson-Thomas, Colin, author
Bumi Aksara, 1993
Buku Teks
Caroline Theresia, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2001
UI - Tesis (Membership)
edited by Clarke L. Caywood
McGraw-Hill, 1997
Buku Referensi