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APA Citation
Savelsbergh, E. R., Prins, G. T., Rietbergen, C., Fechner, S., Vaessen, B. E., Draijer, J. M., & Bakker, A. (n.d.). effects of innovative science and mathematics teaching on student attitudes and achievement: A meta-analytic study. Educational research review, 19, 158–172. http://access.bl.uk/ark:/81055/vdc_100038845631.0x000006