Putra, Ananta Adita Eka, and Pirim Setiarso. “Cyclic Voltammetric Analysis of Retinol in Facial Serum”. Jurnal Pijar Mipa 20, no. 5 (July 22, 2025): 876–880. Accessed July 29, 2025. http://jurnalfkip.unram.ac.id/index.php/JPM/article/view/9397.