Reeve, Johnmarshall, author
John Wiley & Sons, Inc., 2015
Buku Teks
Nasirudin, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2003
UI - Tesis (Membership)
edited by Morehall R. Jones
University of Nebraska Press, 1962
Buku Teks
Petri, Herbert L, author
Cengage Learning, 2013
Buku Teks
edited by John W. Atkinson, Norman T. Feataher
Robert E. Krieger, 1966
Buku Teks