The International Political Science Association, 2009
Buku Referensi
Pojman, Louis P.
McGraw-Hill , 2003
Buku Teks
Sheldon Anderson ... [and others]
Westview Press, 2015
Buku Teks
Ann Arbor, 2005
Buku Teks
D`anieri, Paul J., 1965-
Cengage Learning, 2017
Buku Teks