Citazione APA

Kegley, C. W., & Wittkopf, E. R. (1996). American foreign policy: Pattern and process (Ed.5.).

Stile di citazione Chicago

Kegley, Charles W., e Eugene R. Wittkopf. American Foreign Policy: Pattern and Process. Ed.5. New York, St Martins press, 1996.

Citazione MLA

Kegley, Charles W., e Eugene R. Wittkopf. American Foreign Policy: Pattern and Process. Ed.5. 1996.