Richards, Jack C.
Curriculum development in language teaching
Cambridge University Press, 2017
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Cook, Vivian
Second language learning and language teaching
ARNOLD, 2001
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Hankes, Elmer Joseph
A universal second language
Hankes Foundation, 1992
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the Development of second language proficiency
Birgit Harley...[et al.], edited
Cambridge University Press , 1990
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Cohen, Norman H.
ADA as a second language
McGraw-Hill, 1986
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