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APA Citation
Salmela-Aro, K., Moeller, J., Schneider, B., Spicer, J., & Lavonen, J. (n.d.). integrating the light and dark sides of student engagement using person-oriented and situation-specific approaches. Learning and instruction, 43, 61–70. http://access.bl.uk/ark:/81055/vdc_100032177790.0x000042