Enabling Assessment over Time with Digital Writing Tools
Hicks, Troy. The Digital Writing Workshop. Portsmouth, NH: Heinemann, 2009. Chapter 6: "Enabling Assessment over Time with Digital Writing Tools."
As the title suggests, in this book Hicks shows readers how to adapt principles of the writing workshop approach to digital writing. His chapter 6, on assessment, includes formative and summative assessment; teacher, peer, and self-assessment; and assessment rubrics that are tailored to specific digital genres. See also the review by Ken Martin and Digital Writing Workshop wiki.