Cita APA (7a ed.)

Nguyên, D. H., & Nguyen, K. (1957). Speak vietnamese. School of Languages.

Cita Chicago Style (17a ed.)

Nguyên, Dình Hòa, y Khac-Kham Nguyen. Speak Vietnamese. Saigon: School of Languages, 1957.

Cita MLA (9a ed.)

Nguyên, Dình Hòa, y Khac-Kham Nguyen. Speak Vietnamese. School of Languages, 1957.