Fitzgerald, Gerald B.
A.S.Barnes and Company, 1948
Buku Teks
Butler, George D.
McGraw-Hill Book Company, Inc., 1949
Buku Teks
Crooks, Robert, 1941-
The Benjamin Pub, 1983
Buku Teks
Blackwell, 2007
eBooks
Fajar Iqbal Mirza, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2020
UI - Tesis (Membership)