Cita APA (7a ed.)

Azar, B. S. (1989). Understanding and using english grammar (2nd ed.). Prentice Hall Regents.

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Azar, Betty Schrampfer. Understanding and Using English Grammar. 2nd ed. Prentice Hall Regents, 1989.