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APA Citation
Darling-Hammond, L., Barron, B., Pearson, P. D., Schoenfeld, A. H., Stage, E. K., Zimmerman, T. D., Cervetti, G., & Tilson, J. L. (2015). Powerful Learning : What We Know About Teaching for Understanding. San Francisco : Jossey-Bass. http://access.bl.uk/ark:/81055/vdc_100026534182.0x000001