Zulfaidah, Nanda Tsalasani, Endah Kurniawati, Gita Herdittya Putri, and Fitria Widiani. “The Effect of Variation in Solvent Concentration on Caffeine Content in Green Arabica Coffee Bean Extract (Coffea Arabica) Using UV-Vis Spectrophotometry ”. Journal of Food and Pharmaceutical Sciences 12, no. 3 (December 28, 2024): 266-272. Accessed January 5, 2025. https://journal.ugm.ac.id/v3/JFPS/article/view/17983.