Cita APA

Leo Jones. (2003). New progress to proficiency. Đà Nẵng.

Chicago Style Citation

Leo Jones. New Progress to Proficiency. Đà Nẵng, 2003.

Cita MLA

Leo Jones. New Progress to Proficiency. Đà Nẵng, 2003.

Atenció: Aquestes cites poden no estar 100% correctes.