Language contact / Yaron Matras
Cambridge University Press, 2009
 eBooks
Saville-Troike, Muriel, 1936-
Introducing second language acquisition
Cambridge University Press , 2006
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Saville-Troike, Muriel, 1936-
Introducing second language acquisition
Cambridge University Press, 2012
 Buku Teks SO
Second language acquisition and its pscycho-cultural implications
 Artikel Jurnal
Larsen-Freeman, Diane
An introduction to second language acquisition research / Diane Larsen-Freeman and Michael H. Long
Longman , 1992
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