APA (7th ed.) Citation

Harmer, J. (1998). How to teach English: An introduction to the practice of English language teaching. Longman.

Chicago Style (17th ed.) Citation

Harmer, Jeremy. How to Teach English: An Introduction to the Practice of English Language Teaching. Harlow: Longman, 1998.

MLA (8th ed.) Citation

Harmer, Jeremy. How to Teach English: An Introduction to the Practice of English Language Teaching. Longman, 1998.