APA (7th ed.) Citation

Azar, B. S. (2009). Understanding and using English grammar (4th. edition.). Pearson Education.

Chicago Style (17th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar. 4th. edition. New York: Pearson Education, 2009.

MLA (9th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar. 4th. edition. Pearson Education, 2009.

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