Helen Dwight Reid Educational Foundation. (1990). Perspectives on political science. Heldref Publications.
Citace podle Chicago (17th ed.)Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Washington, D.C.: Heldref Publications, 1990.
Citace podle MLA (9th ed.)Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Heldref Publications, 1990.
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