Danuta Gabrys-Barker
Cross-linguistic influences in multilingual language acquisition
Springer, 2012
 eBooks
Saville-Troike, Muriel, 1936-
Introducing second language acquisition
Cambridge University Press , 2006
 Buku Teks
Saville-Troike, Muriel, 1936-
Introducing second language acquisition
Cambridge University Press, 2012
 Buku Teks SO
Mitchell, Rosamond
Second language learning theories
Arnold, 1998
 Buku Teks SO
Second language acquisition and its pscycho-cultural implications
 Artikel Jurnal