APA aipamena

Nguyen, T. N., & Hanoi National university of education. Faculty of English. (2011). Speaking 1. H: University of education publishing house.

Chicago Style aipamena

Nguyen, Thuy Nga, và Hanoi National university of education. Faculty of English. Speaking 1. H: University of education publishing house, 2011.

MLA aipamena

Nguyen, Thuy Nga, và Hanoi National university of education. Faculty of English. Speaking 1. H: University of education publishing house, 2011.