Quigley, C. N., & Longaker, R. P. (1968). Conflict, politics, and freedom (Teachers' ed.). Ginn.
Lua i Stíl Chicago (17ú heag.)Quigley, Charles N., agus Richard P. Longaker. Conflict, Politics, and Freedom. Teachers' ed. Boston: Ginn, 1968.
Lua MLA (8ú heag.)Quigley, Charles N., agus Richard P. Longaker. Conflict, Politics, and Freedom. Teachers' ed. Ginn, 1968.
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