Thomson, A. J. (1991). A practical English grammar: Exercises I and Exercises II. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoThomson, A J. A Practical English Grammar: Exercises I and Exercises II. Oxford: Oxford University Press, 1991.
MLA CitationThomson, A J. A Practical English Grammar: Exercises I and Exercises II. Oxford: Oxford University Press, 1991.
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