Cita APA (7a ed.)

Azar, B. S. (1999). Understanding and using English grammar (3rd ed.). Prentice Hall Regents.

Cita Chicago Style (17a ed.)

Azar, Betty Scrampfer. Understanding and Using English Grammar. 3rd ed. Upper Saddle River, N.J: Prentice Hall Regents, 1999.

Cita MLA (9a ed.)

Azar, Betty Scrampfer. Understanding and Using English Grammar. 3rd ed. Prentice Hall Regents, 1999.