Theresih, Karim, Cornelia Budimarwanti, Indyah Sulistyo Arty, Sri Handayani, Novia Putri Ramadhani, and Rakhmawati Kurniasih. “Synthesis of ZnO Nanoparticles from Zink Acetate Using Red Betel and Bay Leaves Extract and It’s Application As Sunscreen”. Indonesian Journal of Chemistry and Environment 4, no. 1 (November 21, 2021): 31–38. Accessed May 11, 2025. https://journal.uny.ac.id/index.php/ijoce/article/view/45299.