Cita APA

Azar, B. S. 1., & Azar, B. S. 1. (1989). Understanding and using English grammar (2. edition.). Englewood Cliffs, N.J.: Prentice Hall Regents.

Citación estilo Chicago

Azar, Betty Schrampfer 1941-, y Betty Schrampfer 1941- Azar. Understanding and Using English Grammar. 2. edition. Englewood Cliffs, N.J.: Prentice Hall Regents, 1989.

Cita MLA

Azar, Betty Schrampfer 1941-, y Betty Schrampfer 1941- Azar. Understanding and Using English Grammar. 2. edition. Englewood Cliffs, N.J.: Prentice Hall Regents, 1989.