APA引文

Harmer, J. (1991). The practice of english language teaching. London: Longman.

Trích dẫn kiểu Chicago

Harmer, Jeremy. The Practice of English Language Teaching. London: Longman, 1991.

MLA引文

Harmer, Jeremy. The Practice of English Language Teaching. London: Longman, 1991.

警告：这些引文格式不一定是100％准确.