1. Bahe, S. & Passe, A. (1998). Minneapolis Learning Readiness Collaborative: Action research study. Unpublished manuscript. Minneapolis, MN: Minneapolis Public Schools.
2. The Home Instruction Program for Preschool Youngsters (HIPPY)
3. Long-Term Effects of Early Childhood Programs on Cognitive and School Outcomes
4. Bradley, R. H. & Whiteside-Mansell, L. (1995). Evaluation of HIPPY program: A look at outcomes at the end of second grade. Unpublished manuscript. Little Rock, AR: Center for Research on Teaching & Learning, University of Arkansas at Little Rock.