Fadilla, Audia, Alya Arahma, and Enni Halimatusa’diyah Pakpahan. 2024. “Cara Pengelolaan Limbah Kopi”. El-Mujtama: Jurnal Pengabdian Masyarakat  4 (2):791–798 . https://doi.org/10.47467/elmujtama.v4i2.899.