Little, Craig B.
F.E. Peacock Publishers, 1989
Buku Teks
Sihite, Romany, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1979
UI - Skripsi (Membership)
Suchar, Charles S.
Holt, Rinehart and Winston, 1978
Buku Teks
edited by George W. Albee, Justin M. Joffe, and Linda A. Dusenbury
Sage, 1988
Buku Teks
Inderbitzin, Michelle Lee, author
SAGE, 2015
Buku Teks