APA (7th ed.) Citation

Azar, B. S., & Hagen, S. A. (2006). Basic English grammar (3rd ed. with answer key.). Pearson Longman.

Chicago Style (17th ed.) Citation

Azar, Betty Schrampfer, and Stacy A. Hagen. Basic English Grammar. 3rd ed. with answer key. White Plains, NY: Pearson Longman, 2006.

MLA (9th ed.) Citation

Azar, Betty Schrampfer, and Stacy A. Hagen. Basic English Grammar. 3rd ed. with answer key. Pearson Longman, 2006.

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