APA (7th ed.) Citation

Azar. (1999). Understanding and using English grammar (3rd ed.). Longman.

Chicago Style (17th ed.) Citation

Azar. Understanding and Using English Grammar. 3rd ed. London: Longman, 1999.

MLA (8th ed.) Citation

Azar. Understanding and Using English Grammar. 3rd ed. Longman, 1999.

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