An, S., I. Marsaulina, and D. Aulia. “Motivation, Supervision, and Adherence to Medical Waste Policy in South Labuhanbatu, North Sumatera”. Journal of Health Policy and Management, vol. 5, no. 2, May 2020, pp. 146-51, https://thejhpm.com/index.php/thejhpm/article/view/181.