Nagle John D. (1989). Introduction to comparative politics: Political system performance in the three worlds (2nd. ed.). Nelson-Hall.
Chicago-referens (17:e uppl.)Nagle John D. Introduction to Comparative Politics: Political System Performance in the Three Worlds. 2nd. ed. Chicago: Nelson-Hall, 1989.
MLA-referens (9:e uppl.)Nagle John D. Introduction to Comparative Politics: Political System Performance in the Three Worlds. 2nd. ed. Nelson-Hall, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.