1. Bamford, J., & Day, R. R. (Eds.). (2004). Extensive reading activities for teaching language. Cambridge University Press.
2. Brown, H. D. (2001). Teaching by principles: An interactive approach to language pedagogy (2nd edition). White Plains, NY: Pearson Education.
3. Carrell, P., & J.G. Carson. (1997). Extensive and Intensive Reading in an EAP setting. English for Specific Purposes, 16(1), 47-60. DOI: https://doi.org/10.1016/S0889-4906(96)00031-2
4. Cho, K., & Krashen, S. (1994). Acquisition of vocabulary from the Sweet Valley Kids series: Adult ESL acquisition. Journal of Reading, 37(8), 662–667. http://sdkrashen.com/content/articles/1994_sweet_valley_high_with_kscho.pdf
5. Day, R. R., & Bamford, J. (1998). Extensive reading in the second language classroom. Cambridge: Cambridge University Press. Cambridge: Cambridge University Press.