Ningrum, Ninuk Rahayu, Ernawati Munadi, and Tjahya Widayanti. “ANALISIS EFISIENSI SISTEM TATA NIAGA GULA DI INDONESIA”. Buletin Ilmiah Litbang Perdagangan 1, no. 3 (February 6, 2018): 3-28. Accessed January 22, 2025. https://jurnal.kemendag.go.id/bilp/article/view/301.