United States. Department of State. Office of External Research & United States. Central Intelligence Agency. (1972). Who's who in North Vietnam. The Office?.
Chicago-referens (17:e uppl.)United States. Department of State. Office of External Research och United States. Central Intelligence Agency. Who's Who in North Vietnam. [Washington?: The Office?, 1972.
MLA-referens (8:e uppl.)United States. Department of State. Office of External Research och United States. Central Intelligence Agency. Who's Who in North Vietnam. The Office?, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.