Khairan, K.; Musvira, I.; Lala, A.; Diah, M.; Maulana, A.; Idroes, G. M.; Awang, K. Evaluating Extraction Methods for Caffeine Content in Gayo Arabica Coffee Oil through Gas Chromatography-Mass Spectroscopy. Grimsa J. Sci. Eng. Technol. 2024, 2, 43-51.