Cook, Guy W.D.
Language play, language learning
Oxford University Press, 2000
 Buku Teks
Language and language learning
edited by Albert H. Marckwardt
National Council of Teachers of English, 1968
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Dakin, Julian
The language laboratory and language learning
Longman, 1975
 Buku Teks SO
Cook, Vivian
Second language learning and language teaching
Edward Arnold, 2001
 Buku Teks SO
McAllister, Harry E.
Elements of business and economic statistics learning
John Wiley, 1975
 Buku Teks SO