Tamba, Asnita Bella Putri, and Nelva Karmila Jusuf. “The Association Between Skin Types and Acne Vulgaris”. Sumatera Medical Journal 3, no. 1 (January 20, 2020): 34 - 40. Accessed June 18, 2024. https://talenta.usu.ac.id/smj/article/view/3279.