Nunan, D. (2002). Expressions intro. Australia: Thomson/ Heinle.
Trích dẫn kiểu ChicagoNunan, David. Expressions Intro. Australia: Thomson/ Heinle, 2002.
MLA引文Nunan, David. Expressions Intro. Australia: Thomson/ Heinle, 2002.
警告：這些引文格式不一定是100％准確.
APA引文