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http://www.barnesfoundation.org
3. Catterall, J. S., Dumais, S. A., & Hampden-Thomas, G. (2012). The arts and achievement in at-risk youth: Findings from four longitudinal studies. Washington, DC: National Endowment for the Arts.
4. Clark, G., & Zimmerman, E. (2004). Teaching talented art students: Principles and practices. New York/Reston: Teachers College Press/National Art Education Association.
5. Constantino, T. E. (2002, Fall). Advocating for the arts in education: Moving beyond the intrinsic vs. instrumental. Illinois School Journal, 6–11.