Satriana, Lila Zahara, Yaumil Hafizah, Amrina Maulida, Yanna Syamsuddin, and Muhammad D. Supardan. “Comparison of Oven and Microwave Drying on Extraction of Spent Coffee Grounds Oil ”. Tropical Journal of Natural Product Research (TJNPR) 8, no. 12 (December 29, 2024): 9437 – 9442. Accessed January 30, 2025. https://tjnpr.org/index.php/home/article/view/5427.