APA (7th ed.) Citation

Azar. (1999). Understanding and using English grammar (3rd ed.). Pearson Education.

Chicago Style (17th ed.) Citation

Azar. Understanding and Using English Grammar. 3rd ed. New York: Pearson Education, 1999.

MLA (8th ed.) Citation

Azar. Understanding and Using English Grammar. 3rd ed. Pearson Education, 1999.