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.
Atenció: Aquestes cites poden no estar 100% correctes.
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.