California Wellness Foundation, Criminal Justice Program (Rand Corporation), Labor and Population Program, & Karoly, L. A. (1998). Investing in our children: What we know and don't know about the costs and benefits of early childhood interventions. Rand.

California Wellness Foundation, Criminal Justice Program (Rand Corporation), Labor and Population Program, and Lynn A. Karoly. Investing in Our Children: What We Know and Don't Know About the Costs and Benefits of Early Childhood Interventions. Santa Monica, Calif.: Rand, 1998.

California Wellness Foundation, et al. Investing in Our Children: What We Know and Don't Know About the Costs and Benefits of Early Childhood Interventions. Rand, 1998.