APA (7th ed.) Citation

Harmer. (1998). How to teach english: An introduction to the practice of english language teching. Longman.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.