Azar, B. S. (1991). Understanding and Using English Grammar. Englewood Cliffs, New Jersey: Prentice-Hall.
Trích dẫn kiểu ChicagoAzar, Betty Schrampfer. Understanding and Using English Grammar. Englewood Cliffs, New Jersey: Prentice-Hall, 1991.
MLA citiranjeAzar, Betty Schrampfer. Understanding and Using English Grammar. Englewood Cliffs, New Jersey: Prentice-Hall, 1991.
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