Ainurrohmah, C. “Analisis Manajemen Operasional Terhadap Efisiensi Biaya Produksi”. Maliki Interdisciplinary Journal, Vol. 4, no. 6, Mar. 2026, pp. 2294-00, https://urj.uin-malang.ac.id/index.php/mij/article/view/25078.