Betty Schrampfer Azar,, Rachel Spack Koch, Susan Jamieson, Barbara Andrews, & Jeanie Francis. (1990). Understanding and Using English grammar: Workbook. USA: Prentice hall regents.
Trích dẫn kiểu ChicagoBetty Schrampfer Azar,, Rachel Spack Koch, Susan Jamieson, Barbara Andrews, và Jeanie Francis. Understanding and Using English Grammar: Workbook. USA: Prentice hall regents, 1990.
Deismireacht MLABetty Schrampfer Azar,, et al. Understanding and Using English Grammar: Workbook. USA: Prentice hall regents, 1990.
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