APA引文

Keen, D. (1992). Developing vocabulary skills. Boston, MA: Heinle & Heinle.

Trích dẫn kiểu Chicago

Keen, Dennis. Developing Vocabulary Skills. Boston, MA: Heinle & Heinle, 1992.

MLA引文

Keen, Dennis. Developing Vocabulary Skills. Boston, MA: Heinle & Heinle, 1992.

警告：这些引文格式不一定是100％准确.