Ur, Penny
A course in language teaching : practice and theory
Cambridge University Press, 1991
 Buku Teks SO
Ur, Penny
A course in language teaching : practice and theory
Cambridge University Press, 2006
 Buku Teks
McArthur, Tom [Thomas Burns]
A foundation course for language teachers
Cambridge University Press, 1983
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Wetzell, A.D.
A course in the theory of stochastic processes
McGraw-Hill, 1981
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Kreps, David M.
A course in microeconomic theory
Princeton University Press, 1990
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