APA引文

Nunan, D. (1999). Speak out 3. Singapore: Thomson Asia ELT.

Trích dẫn kiểu Chicago

Nunan, David. Speak Out 3. Singapore: Thomson Asia ELT, 1999.

MLA引文

Nunan, David. Speak Out 3. Singapore: Thomson Asia ELT, 1999.

警告：這些引文格式不一定是100％准確.