APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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