“Analisis Biaya Variable Costing Dalam Pengambilan Keputusan Menerima atau Menolak Pesanan Khusus”, EJP, vol. 2, no. 5, pp. 417–422, Oct. 2021, Accessed: Oct. 05, 2026. [Online]. Available: https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/36153