Trích dẫn APA

JONES, L. Progress to proficiency: Student's book (1996.). Mỹ.

Trích dẫn kiểu Chicago

JONES, LEO. Progress to Proficiency: Student's Book. 1996. Mỹ.

MLA Trích dẫn

JONES, LEO. Progress to Proficiency: Student's Book. 1996. Mỹ.

Warning: These citations may not always be 100% accurate.