Discarga, M., et al. “Effects of Extracurricular Activities on the Academic Performance of Grade VI Pupils at Tandang Sora Elementary School”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, vol. 1, no. 1, Apr. 2019, https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/1229.