Agus Setiawan, Yudi. “ANALISIS PENDAPATAN DAN EFISIENSI INDUSTRI GULA MERAH DI DESA CISUMUR KABUPATEN CILACAP”. Perwira Journal of Economics & Business 3, no. 01 (February 10, 2023): 1–9. Accessed July 3, 2024. https://ejournal.unperba.ac.id/index.php/pjeb/article/view/129.