Manulat, Jessa. “Effects of Shifting Schedules in Grade 7’s Chemistry Achievement and Study Habits: Basis in the Production of Learning Packets”. Magister - Journal of Educational Research 2, no. 1 (November 17, 2023). Accessed July 27, 2024. http://errc.ctu.edu.ph/ojs/index.php/magister/article/view/29.