Azar, B. S. (1999). Understanding and using English grammar (3rd ed.). Prentice Hall Regents.
芝加哥风格引文Azar, Betty Scrampfer. Understanding and Using English Grammar. 3rd ed. Upper Saddle River, N.J: Prentice Hall Regents, 1999.
MLA引文Azar, Betty Scrampfer. Understanding and Using English Grammar. 3rd ed. Prentice Hall Regents, 1999.
警告：这些引文格式不一定是100％准确.