Kegley, C. W., & Wittkopf, E. R. (1996). American foreign policy: Pattern and process (Ed.5.).
Dyfyniad Arddull ChicagoKegley, Charles W., and Eugene R. Wittkopf. American Foreign Policy: Pattern and Process. Ed.5. New York, St Martins press, 1996.
Dyfyniad MLAKegley, Charles W., and Eugene R. Wittkopf. American Foreign Policy: Pattern and Process. Ed.5. 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.