1. Atai, M. R., & Alipour, M. (2012). The effect of the combination of small-group conferencing and portfolio procedure on EFL students’ writing accuracy. Innovation in Language Learning and Teaching, 6(2), 97–112.
2. Aydin, S. (2010). EFL writers’ perceptions of portfolio keeping. Assessing Writing, 15(3), 194–203.
3. Bachman, L. F., & Palmer, A. S. (1996). Language testing in practice. Oxford: Oxford University Press.
4. Brown, H. D. (2004). Language assessment: Principles and classroom practices. New York, NY: Pearson.
5. Cambridge, D. (2010). Eportfolios for lifelong learning and deliberative assessment. San Francisco, CA: Jossey-Bass.