Allen, Edward David, 1923-
Classroom techniques : foreign languages and English as a second language
Harcourt Brace Jovanovich, c1977
 Buku Teks SO
Second language writing : research insights for the classroom
editedby Barbara Kroll
Cambridge University Press, 1990
 Buku Teks SO
Second language writing : research insights for the classroom
edited by Barbara Kroll
Cambridge University Press, 1990
 Buku Teks
Second language acquisition and its pscycho-cultural implications
 Artikel Jurnal
Ohta, Amy Snyder
Second language aquisition process in the classroom learning Japanese
Lawrence Erlbaum Associates, 2001
 Buku Teks SO