1. Blending In: The Extent and Promise of Blended Education in the United States;Allen,2007
2. Bloom's Taxonomy: A Forty-Year Retrospective;Anderson,1994
3. Mostly Harmless Econometrics: An Empiricist’s Companion;Angrist,2009
4. How ‘Flipping’ the Classroom Can Improve the Traditional Lecture;Berrett,2012