Keys, T. D., Farkas, G., Burchinal, M. R., Duncan, G. J., Vandell, D. L., Li, W., . . . Howes, C. (2013). Preschool Center Quality and School Readiness: Quality Effects and Variation by Demographic and Child Characteristics.

Keys, Tran D., George Farkas, Margaret R. Burchinal, Greg J. Duncan, Deborah L. Vandell, Weilin Li, Erik A. Ruzek, and Carollee Howes. Preschool Center Quality and School Readiness: Quality Effects and Variation By Demographic and Child Characteristics. 2013.

Keys, Tran D., et al. Preschool Center Quality and School Readiness: Quality Effects and Variation By Demographic and Child Characteristics. 2013.