Azar, b. s. (1989). Understanding and using english grammar. Prentice Hall Regents.
Chicagoスタイル(17版)引用形式Azar, betty schrampher. Understanding and Using English Grammar. Prentice Hall Regents, 1989.
MLA(9版)引用形式Azar, betty schrampher. Understanding and Using English Grammar. Prentice Hall Regents, 1989.
警告: この引用は必ずしも正確ではありません.