Tinder, G. E. (1979). Political thinking: The perennial questions. Little, Brown.
Lua i Stíl Chicago (17ú heag.)Tinder, Glenn E. Political Thinking: The Perennial Questions. Boston: Little, Brown, 1979.
Lua MLA (9ú heag.)Tinder, Glenn E. Political Thinking: The Perennial Questions. Little, Brown, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.