Magdoff, Harry
Modern Reader Paperbacks, 1969
Buku Teks
M. Iman Usman
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Tugas Akhir
Fordham University Press , 1962
Buku Teks
Randall, Clarence B.
The University of Chicago Press, 1954
Buku Teks
Knauth, Oliver D.
Nasional Planning Association, 1960
Buku Teks