Azar, B. S. (2007). Understanding and using English grammar: Workbook. Tp. HCM: Trẻ.
Čikaški stil citiranjaAzar, Betty Schrampfer. Understanding and Using English Grammar: Workbook. Tp. HCM: Trẻ, 2007.
MLA način citiranjaAzar, Betty Schrampfer. Understanding and Using English Grammar: Workbook. Tp. HCM: Trẻ, 2007.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.