Yahya Efendi, Renetha Salma Myesha A and Fathur Syahnuron (2025) “Analysis of Caffeine Levels in Pacitan Speciality Coffee Using UV-Visible spectrophotometry”, TIME in Physics, 3(1), pp. 1–7. Available at: http://ejournal.universitasmandiri.ac.id/index.php/timeinphys/article/view/151 (Accessed: 3 July 2025).