Balila, Angelo, Patrick Adrian Rodriguez, Rose Luay, Catherine Atienza, Desireei Sehiyo, and Kimberly Joyce Embile. 2020. “Effectiveness of Using Gumamela Ink Among Grade 12 ABM Students in Bestlink College of The Philippines”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research 2 (1). https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/1371.