Hughes, B. B. (1997). Continuity and chance in world politics: Competing perspectives (3rd ed.). Prentice Hall.
Dyfyniad Arddull ChicagoHughes, Barry B. Continuity and Chance in World Politics: Competing Perspectives. 3rd ed. New Jersey: Prentice Hall, 1997.
Dyfyniad MLAHughes, Barry B. Continuity and Chance in World Politics: Competing Perspectives. 3rd ed. Prentice Hall, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.