Nagle John D. (1989). Introduction to comparative politics: Political system performance in the three worlds (2nd. ed.). Nelson-Hall.
Lua i Stíl Chicago (17ú heag.)Nagle John D. Introduction to Comparative Politics: Political System Performance in the Three Worlds. 2nd. ed. Chicago: Nelson-Hall, 1989.
Lua MLA (9ú heag.)Nagle John D. Introduction to Comparative Politics: Political System Performance in the Three Worlds. 2nd. ed. Nelson-Hall, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.