Azar, B. S. (1993). Understanding and using English grammar: A reference grammar (2nd ed.). Prentice Hall Regents.
芝加哥风格引文Azar, Betty Schrampfer. Understanding and Using English Grammar: A Reference Grammar. 2nd ed. Englewood Cliffs, N.J.: Prentice Hall Regents, 1993.
MLA引文Azar, Betty Schrampfer. Understanding and Using English Grammar: A Reference Grammar. 2nd ed. Prentice Hall Regents, 1993.
警告：这些引文格式不一定是100％准确.