Quigley, C. N., & Longaker, R. P. (1976). Conflict, politics, and freedom. Ginn.
Lua i Stíl Chicago (17ú heag.)Quigley, Charles N., agus Richard P. Longaker. Conflict, Politics, and Freedom. Lexington, Mass.: Ginn, 1976.
Lua MLA (8ú heag.)Quigley, Charles N., agus Richard P. Longaker. Conflict, Politics, and Freedom. Ginn, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.