APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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