1. Portfolio expectations: Possibilities and limits;Callahan;Assessing Writing,1995
2. Teaching L2 composition: Purpose, process, and practice;Ferris,2014
3. Writing teachers as assessors of writing;Hamp-Lyons,2003
4. Assessing the portfolio: Principles for practice, theory, and research;Hamp-Lyons,2000
5. Classroom writing assessment and feedback in L2 school contexts;Lee,2017