Abi Zulkarnain, Muhammad, Eka Kasymir, and Yuliana Saleh. “Analisis Nilai Tambah, Pendapatan, Dan Bauran Pemasaran Kopi Pada Agroindustri Kopi Bubuk Klangenan Pringsewu”. Journal of Food System and Agribusiness 7, no. 2 (October 31, 2023): 141–152. Accessed September 17, 2026. https://jurnal.polinela.ac.id/index.php/JFA/article/view/2231.