1. Baker, P. C., Keck, C. K., Mott, F. L., & Quinlan, S. V. (1993). NLSY child handbook—revised edition: A guide to the 1986–1990 National Longitudinal Survey of Youth child data. Center for Human Resource Research, Ohio State University: Columbus, OH.
2. Blau, D. (2002). The supply of quality in child care centers. The Review of Economics and Statistics, 84(3), 483–496. doi: 10.1162/003465302320259484 .
3. Bradley, R. H. (1982). The HOME inventory—A review of the first 15 years. In W. Frankenburg, N. Anastasiow, & A. Fandal (Eds.), Identifying the developmentally delayed child (pp. 87–100). Baltimore, MD: University Park Press.
4. Bradley, R. H. (1994). The HOME inventory: Review and reflections. In H. Reese (Ed.), Advances in child development and behavior (pp. 241–288). San Diego, CA: Academic Press.
5. Bradley, R. H., & Caldwell, B. M. (1988). Using the HOME inventory to assess the family environment. Pediatric Nursing, 14(2), 97–102.