Tarone, Elaine
Focus on the language learner : approaches to identifying and meeting the needs of second language learners
Oxford University Press, 1991
 Buku Teks
Error analysis : perspectives on second language acquisition
edited by Jack C. Richards
Longman, 1974
 Buku Teks
A brief analysis of vocabulary teaching in teaching Chinese as a second language
 Artikel Jurnal
Cook, Vivian
Second language learning and language teaching
ARNOLD, 2001
 Buku Teks
A Universal second language
The Hankes Foundation, 1992
 Multimedia