Leon, Patrick C. De. “Sustaining Total Quality Management in an ISO 9001:2008 – Certified Philippine Local Government Unit: The Case of Calapan City”. Journal of Management and Development Studies 6 (December 31, 2017): 23–42. Accessed September 17, 2024. https://jmds.upou.edu.ph/index.php/journal/article/view/23.