BACKER, A. (1973). The study of politics: the Western tradition: And American origins. 2nd ed (2nd ed.). McGraw-Hill.
Citace podle Chicago (17th ed.)BACKER, Andrew. The Study of Politics: The Western Tradition: And American Origins. 2nd Ed. 2nd ed. New York: McGraw-Hill, 1973.
Citace podle MLA (9th ed.)BACKER, Andrew. The Study of Politics: The Western Tradition: And American Origins. 2nd Ed. 2nd ed. McGraw-Hill, 1973.
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