APA (7th ed.) Citation

Azar. (1989). Understanding and using English grammar (2nd ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Azar. Understanding and Using English Grammar. 2nd ed. New Jersey: Prentice-Hall, 1989.

MLA (8th ed.) Citation

Azar. Understanding and Using English Grammar. 2nd ed. Prentice-Hall, 1989.