APA (7th ed.) Citation

United States. Department of State. Office of External Research & United States. Central Intelligence Agency. (1972). Who's who in North Vietnam. The Office?.

Chicago Style (17th ed.) Citation

United States. Department of State. Office of External Research and United States. Central Intelligence Agency. Who's Who in North Vietnam. [Washington?: The Office?, 1972.

MLA (8th ed.) Citation

United States. Department of State. Office of External Research and United States. Central Intelligence Agency. Who's Who in North Vietnam. The Office?, 1972.