APA-referens (7:e uppl.)
Wiarda, H. J. (2010). Think tanks and foreign policy: The Foreign Policy Research Institute and presidential politics. Rowman & Littlefield.
Chicago-referens (17:e uppl.)
Wiarda, Howard J. Think Tanks and Foreign Policy: The Foreign Policy Research Institute and Presidential Politics. Lanham, MD: Rowman & Littlefield, 2010.
MLA-referens (9:e uppl.)
Wiarda, Howard J. Think Tanks and Foreign Policy: The Foreign Policy Research Institute and Presidential Politics. Rowman & Littlefield, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.