Sumardiyono, B., dan B. Sumardiyono. “Segmentasi Citra Digital Paleografi Arsip VOC Menggunakan Metode Thresholding”. Jurnal Rekayasa Informasi, Vol. 11, no. 1, May 2022, hlm. 17-23, https://ejournal.istn.ac.id/index.php/rekayasainformasi/article/view/1244.