United States. Department of State. Office of External Research & United States. Central Intelligence Agency. (1972). Who's who in North Vietnam. The Office?.
Lua i Stíl Chicago (17ú heag.)United States. Department of State. Office of External Research agus United States. Central Intelligence Agency. Who's Who in North Vietnam. [Washington?: The Office?, 1972.
Lua MLA (8ú heag.)United States. Department of State. Office of External Research agus United States. Central Intelligence Agency. Who's Who in North Vietnam. The Office?, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.