APA (7th ed.) Citation

Duiker, W. J. (1989). Vietnam since the fall of Saigon (Updated ed.). Ohio University Center for International Studies.

Chicago Style (17th ed.) Citation

Duiker, William J. Vietnam Since the Fall of Saigon. Updated ed. Athens, Ohio: Ohio University Center for International Studies, 1989.

MLA (9th ed.) Citation

Duiker, William J. Vietnam Since the Fall of Saigon. Updated ed. Ohio University Center for International Studies, 1989.