Syed Sahil, Sharifah Azizah, and Rosna Awang Hashim. “The Roles of Social Support in Promoting Adolescents’ Classroom Cognitive Engagement Through Academic Self-Efficacy”. Malaysian Journal of Learning and Instruction, vol. 8, Jan. 2011, pp. 49-69, https://doi.org/10.32890/mjli2011.8.3.