Siregar, Putra Apriadi. “Monitoring and Evaluation of Smoke Free Policy in Medan City: Case Study of Medan City”. Jurnal Ilmiah Permas: Jurnal Ilmiah STIKES Kendal 13, no. 1 (December 4, 2022): 67–76. Accessed May 16, 2024. https://journal2.stikeskendal.ac.id/index.php/PSKM/article/view/313.