Citazione Stile APA (7a Edizione)

Boyd, G., & Hopple, G. W. (1987). Political change and foreign policies. St. Martin's Press.

Citazione stile Chigago Style (17a edizione)

Boyd, Gavin, e Gerald W. Hopple. Political Change and Foreign Policies. New York: St. Martin's Press, 1987.

Citatione MLA (9a ed.)

Boyd, Gavin, e Gerald W. Hopple. Political Change and Foreign Policies. St. Martin's Press, 1987.