APA (7th ed.) Citation

Azar, B. S., & Hagen, S. A. (2010). Understanding and using English grammar: Chartbook A reference Garammar (Fourth edition.). Longman.

Chicago Style (17th ed.) Citation

Azar, Betty Schrampfer, and Stacy A. Hagen. Understanding and Using English Grammar: Chartbook A Reference Garammar. Fourth edition. White Plains, NY: Longman, 2010.

MLA (9th ed.) Citation

Azar, Betty Schrampfer, and Stacy A. Hagen. Understanding and Using English Grammar: Chartbook A Reference Garammar. Fourth edition. Longman, 2010.

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