Two books have recently been published that link directly to the Principles:
Improving Foreign language teaching: Towards a research-based curriculum and pedagogy, by Ernesto Macaro, Suzanne Graham and Robert Woore.
The book outlines the research and thinking behind the Principles and ends with a chapter of activities that link to the materials on this website, giving teachers more ideas for how to use them. Further information is available here.
Strategies for second language listening: Current scenarios and improved pedagogy, by Suzanne Graham and Denise Santos.
Devoted entirely to developing listening, the book combines a focus on listening research with a strong practical element, with a whole section outlining a range of activities to help teachers improve the listening skills of their learners. The book links closely with Principles 5 and 6. Further information is available here.