University League for Social Reform; edited by Peter Russell
McGraw-Hill, 1966
Buku Teks
Research Center for Peace and Unification, 1979
Buku Teks
Haris Agustin, author
Universitas Indonesia, 2013
UI - Tesis (Membership)
Holland, William L.
Macmillan, 1953
Buku Klasik
Kohn, Hans, author
D. Van Nostrand, 1965
Buku Teks