Littlewood, William T.
Foreign and second language learning : language-acquisition research and its implications for the classroom / William T. Littlewood
Cambridge University Press , 1994
 Buku Teks
Mitchell, Rosamond
Second language learning theories
Routledge, 2004
 Buku Teks
Mitchell, Rosamond
Second language learning theories
Arnold, 1998
 Buku Teks SO
Cook, Vivian
Second language learning and language teaching
ARNOLD, 2001
 Buku Teks
Allen, Edward D.
Classroom techniques : foreign languages and English as a second language
Harcourt Brace Jovanovich, [Date of publication not identified]
 Buku Teks