Helen Dwight Reid Educational Foundation. (1990). Perspectives on political science. Heldref Publications.
Cita Chicago (17th ed.)Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Washington, D.C.: Heldref Publications, 1990.
Cita MLA (9th ed.)Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Heldref Publications, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.