APA (7th ed.) Zitazioa

BACKER, A. (1973). The study of politics: the Western tradition: And American origins. 2nd ed (2nd ed.). McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

BACKER, Andrew. The Study of Politics: The Western Tradition: And American Origins. 2nd Ed. 2nd ed. New York: McGraw-Hill, 1973.

MLA (9th ed.) Zitazioa

BACKER, Andrew. The Study of Politics: The Western Tradition: And American Origins. 2nd Ed. 2nd ed. McGraw-Hill, 1973.