“PENERAPAN METODE STEPPING STONE DAN VRP (VEHICLE ROUTING PROBLEM) UNTUK TRANSPORTASI PENGIRIMAN HASIL PRODUKSI KELAPA SAWIT”. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, vol. 6, no. 3, Oct. 2023, pp. 828-34, https://doi.org/10.54314/jssr.v6i3.1485.