Putri, Aisy, Ica Yulianti Pulungan, and Olivia Des Vinca Albahana Napitupulu. “The Effect of Betel Nut Extract on Melanin Pigment Levels in rats’ Skin Exposed to Ultraviolet B Radiation”. Jurnal Prima Medika Sains 6, no. 1 (June 30, 2024): 72–78. Accessed April 3, 2026. http://139.162.50.187/index.php/jpms/article/view/5454.