APA ציטוט

(1972). Economic and social assistance to Vietnam 1972. [S.l.]: [s.n.].

Trích dẫn kiểu Chicago

Economic and Social Assistance to Vietnam 1972. [S.l.]: [s.n.], 1972.

ציטוט MLA

Economic and Social Assistance to Vietnam 1972. [S.l.]: [s.n.], 1972.