APA (7th ed.) Citation

Azar, B. S. (1989). Understanding and using English grammar: Answer key B (2nd ed.). Prentice-Hall Regents.

Chicago Style (17th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar: Answer Key B. 2nd ed. Englewood Cliffs, NJ: Prentice-Hall Regents, 1989.

MLA (9th ed.) Citation

Azar, Betty Schrampfer. Understanding and Using English Grammar: Answer Key B. 2nd ed. Prentice-Hall Regents, 1989.