Cita APA (7th ed.)

Nguyen-dinh-Hoa. (1957). Speak Vietnamese. s.n.

Cita Chicago (17th ed.)

Nguyen-dinh-Hoa. Speak Vietnamese. Saigon: s.n, 1957.

Cita MLA (9th ed.)

Nguyen-dinh-Hoa. Speak Vietnamese. s.n, 1957.