Jaya GW, Nggolaon D, Rumpakwakra E, Rachmah ANL, Rahanra G, Taipabu MI, et al. PERHITUNGAN NILAI ENERGI CELAH PITA MINYAK KAYU PUTIH MENGGUNAKAN DATA PENGUKURAN SPEKTROFOTOMETER UV-VIS . JoP [Internet]. 2025 Apr. 17 [cited 2026 May 8];10(2):79-84. Available from: https://www.online-journal.unja.ac.id/jop/article/view/41575