Wolf, P., Gutmann, B., Puma, M., Rizzo, L., Eissa, N. & Silverberg, M. (2007). Evaluation of the DC Opportunity Scholarship Program: Impacts after one year (NCEE 2007-4010). Washington, DC: U.S. Government Printing Office.
Wolf, P., Gutmann, B., Puma, M., Rizzo, L., Eissa, N. & Silverberg, M. (2007). Evaluation of the DC Opportunity Scholarship Program: Impacts after one year (NCEE 2007-4010). Washington, DC: U.S. Government Printing Office.