APA (7th ed.) Zitazioa
Wiarda, H. J. (2010). Think tanks and foreign policy: The Foreign Policy Research Institute and presidential politics. Rowman & Littlefield.
Chicago Style (17th ed.) Zitazioa
Wiarda, Howard J. Think Tanks and Foreign Policy: The Foreign Policy Research Institute and Presidential Politics. Lanham, MD: Rowman & Littlefield, 2010.
MLA (9th ed.) Zitazioa
Wiarda, Howard J. Think Tanks and Foreign Policy: The Foreign Policy Research Institute and Presidential Politics. Rowman & Littlefield, 2010.
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