Cita APA (7a ed.)

Azar, B. S. (2002). Understanding and using english grammar (3rd ed.). Pearson Education.

Cita Chicago Style (17a ed.)

Azar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. New York: Pearson Education, 2002.

Cita MLA (9a ed.)

Azar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. Pearson Education, 2002.