“Maintaining Clean Environment Inside the Classroom Affecting the Safety and Security of the Grade 12 ABM Students” (2020) Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, 2(1). Available at: https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/1188 (Accessed: 3 April 2026).