1Henry, L. A., J. Castek, W. I. O'Byme & L. Zawilinski. 2012. Using peer collaboration to support online reading, writing, and communication: An empowerment model for struggling readers [J]. Reading & Writing Quarterly 28(3): 279-306.
2Larsen-Freernan, D. & L. Cameron. 2008. Research methodology on language development from a complex systems perspective [J]. Modern Language Journal 92: 200-213.
3Swain, M. & P. Deters. 2007. "New" mainstream SLA theory: Expended and enriched [J]. Modern Language Journal 91: 820-836.