Casinillo, Leomarich F, and Emily L Casinillo. “Econometric Evidence on Self-Determination Theory in Learning Calculus Among Agribusiness Students”. The Indonesian Journal of Social Studies 3, no. 1 (July 15, 2020): 1–12. Accessed May 7, 2024. https://journal.unesa.ac.id/index.php/jpips/article/view/8539.