Boller, Paul F., author
Oxford University Press, 2004
Buku Teks
edited by Arnold J. Meltsner
Institute for Contemporary Studies, 1981
Buku Teks
Kessel, John H., author
Dorsey Press, 1980
Buku Teks
Ni Putu Elvina Suryani, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Tesis Membership
Califano, Joseph A.
W.W.Norton and Company, 1931
Buku Teks