“Effectiveness of Number Coding Scheme As Traffic Code of the MMDA on Private and Public Utility Vehicles from Muñoz to Monumento”. 2019. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research 1 (1). https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/1530.