APA引文

Nunan, D. (1999). Speak out. Singapore: Thomson Asia ELT.

Trích dẫn kiểu Chicago

Nunan, David. Speak Out. Singapore: Thomson Asia ELT, 1999.

MLA引文

Nunan, David. Speak Out. Singapore: Thomson Asia ELT, 1999.

警告：这些引文格式不一定是100％准确.