APA (7th ed.) Citation

U.S. Geographic Names Division. (1971). South vietnam: Official standard names approved by the United States Board on Geographic Names (2nd ed.). [s.n.].

Chicago Style (17th ed.) Citation

U.S. Geographic Names Division. South Vietnam: Official Standard Names Approved by the United States Board on Geographic Names. 2nd ed. Washington: [s.n.], 1971.

MLA (9th ed.) Citation

U.S. Geographic Names Division. South Vietnam: Official Standard Names Approved by the United States Board on Geographic Names. 2nd ed. [s.n.], 1971.