APA (7th ed.) Citation

Azar, B. S. (1999). Understanding and using English grammar. Longman.

Chicago Style (17th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar. [S.l.]: Longman, 1999.

MLA (8th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar. Longman, 1999.

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