Febrina, Wetri, et al. “Waktu Standar Surat Izin Bongkar Palm Kernel Expeller Di PT XYZ Dumai”. Jurnal ARTI (Aplikasi Rancangan Teknik Industri), vol. 16, no. 1, July 2021, pp. 65-71, https://ejurnal.itbriaupesisir.ac.id/index.php/arti/article/view/194.