APA (7th ed.) Citation

Azar, B. S. (1999). Understanding and using English Grammar/Betty Sshrampfer Azar (3rd.ed.). Longman.

Chicago Style (17th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar/Betty Sshrampfer Azar. 3rd.ed. New Jersey: Longman, 1999.

MLA (8th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar/Betty Sshrampfer Azar. 3rd.ed. Longman, 1999.