Specific features of after-school program quality: associations with children's functioning in middle childhood
American Journal of Community Psychology (2010) - Comments
pubmed: 20336364  doi: 10.1007/s10464-010-9304-2  issn: 1573-2770  issn: 0091-0562 

Kim M. Pierce, Daniel M. Bolt, Deborah Lowe Vandell