1. Aebersold, J. A. and Field, M. L. (1997) From Reader to Reading Teacher: Issues and Strategies for Second Language Classrooms. Cambridge: Cambridge University Press.
2. Asano, H. (1996) ‘Ôsentikku na Kyôzai towa Nani ka: Sono Mondaiten to Ichizuke. [What Are Authentic Materials?: Their Problems and Roles]’, The English Teachers’ Magazine 45 (9): 8–10.
3. Association of English Text Publishers (2009) Kyôkasho Kensaku [Search Window for English Textbooks],
http://daieikyo.jp
/aetp/modules/bmc/texts.php (accessed 23 April 2009).
4. Association of English Text Publishers (2010) Kyôkasho Kensaku [Search Window for English Textbooks],
http://daieikyo.jp
/aetp/modules/bmc/texts.php (accessed 30 January 2010).
5. Association of English Text Publishers (2011) Kyôkasho Kensaku [Search Window for English Textbooks],
http://daieikyo.jp
/aetp/modules/bmc/texts.php (accessed 28 March 2011).