Wulandari, Sri, et al. “Organoleptic Properties of Roast Coffee Bean Based on Postharvest Methods, Temperature, and Time of Roasting”. Agroindustrial Technology Journal, vol. 7, no. 2, Dec. 2023, pp. 50-59, https://atj.journal.unida.gontor.ac.id/index.php/atj/article/view/81.