Cook, Vivian
Second language learning and language teaching
ARNOLD, 2001
 Buku Teks
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
Theories in second language acquisition: an introduction
edited by Jessica Williams and Bill Van Patten
NY : Routledge, 2015
 Buku Teks
Brown, James Dean
Understanding research in second language learning: a teachers guide to statistics and research design
Cambridge University Press, 1988
 Buku Teks SO