Azar, B. S. (2002). Understanding and using english grammar (3rd ed.). Pearson Education.
Čikaški stil citiranja (17. izdanje)Azar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. New York: Pearson Education, 2002.
MLA način citiranja (9. izdanje)Azar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. Pearson Education, 2002.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.