Παραπομπή APA

Sabine, G. H., & Thorson, T. L. (1973). A history of political theory (4th ed.). Dryden Press.

Παραπομπή Chicago Style

Sabine, George Holland, και Thomas Landon Thorson. A History of Political Theory. 4th ed. Hinsdale, Ill.: Dryden Press, 1973.

Παραπομπή MLA

Sabine, George Holland, και Thomas Landon Thorson. A History of Political Theory. 4th ed. Dryden Press, 1973.