Azar, b. s. (1993). Understanding and using english grammar. Binarupa Aksara.
Cita Chicago Style (17a ed.)Azar, betty schrampher. Understanding and Using English Grammar. Binarupa Aksara, 1993.
Cita MLA (9a ed.)Azar, betty schrampher. Understanding and Using English Grammar. Binarupa Aksara, 1993.
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