Azar, B. S. (1999). Understanding and using English grammar (3rd ed.). Prentice Hall Regents.
Čikaški stil citiranja (17. izdanje)Azar, Betty Scrampfer. Understanding and Using English Grammar. 3rd ed. Upper Saddle River, N.J: Prentice Hall Regents, 1999.
MLA način citiranja (9. izdanje)Azar, Betty Scrampfer. Understanding and Using English Grammar. 3rd ed. Prentice Hall Regents, 1999.
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