Mistula, Aldrin Ross E., et al. “The Effects of Engaging in Extracurricular Activities to the Academic Performance of Grade 12 ABM Students in Bestlink College of the Philippines School Year 2018-2019”. 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/1334.