APA (7th ed.) Citation

Porter, G., & Emerson, G. (1981). Vietnam: A history in documents. New American Library.

Chicago Style (17th ed.) Citation

Porter, Gareth, and Gloria Emerson. Vietnam: A History in Documents. New York: New American Library, 1981.

MLA (9th ed.) Citation

Porter, Gareth, and Gloria Emerson. Vietnam: A History in Documents. New American Library, 1981.