APA (7th ed.) Citation

Harmer, J., & Thornbury, S. (2004). How to teach grammar. Longman.

Chicago Style (17th ed.) Citation

Harmer, Jeremy, and Scott Thornbury. How to Teach Grammar. Longman, 2004.

MLA (8th ed.) Citation

Harmer, Jeremy, and Scott Thornbury. How to Teach Grammar. Longman, 2004.

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