ebrary, Inc, Towne, L., & Hilton, M. (2004). Implementing randomized field trials in education: Report of a workshop. National Academies Press.

ebrary, Inc, Lisa Towne, and Margaret Hilton. Implementing Randomized Field Trials in Education: Report of a Workshop. Washington, D.C.: National Academies Press, 2004.

ebrary, Inc, et al. Implementing Randomized Field Trials in Education: Report of a Workshop. National Academies Press, 2004.