Ovianti, V., and W. Haji. “RANCANG BANGUN APLIKASI DISTRIBUSI MINYAK SAWIT PT. STEELINDO WAHANA PERKASA CABANG BELITUNG TIMUR”. Jurnal Cendikia, Vol. 17, no. 1 April, Apr. 2019, pp. 187-93, https://jurnal.dcc.ac.id/index.php/JC/article/view/185.