Thomson, A.J.
A practical English grammar
Oxford Oxford University Press, 1986
 Buku Teks
Lugton, Robert C.
American topics: a reading-vocabulary text for speakers of English as a second language / Robert C. Lugton
Prentice-Hall, 1978
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Steinberg, Roberta
Prentice-hall's practice test for the TOEFL : four complete sample test, including essay writing sections
Prentice-Hall, 1987
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Swan, Michael
The new Cambridge English course. Student 4, Upper-intermediate
Cambridge University Press, 1993
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Swan, Michael
The Cambridge English course
Cambridge University Press, 1987
 Buku Teks