Ryandi, Rizky Fajar, and Yulian Findawati. “ Design And Build Information System For Land Certificaton Of Land Office In Sidoarjo Regency ”. Academia Open 30 (September 3, 2021): 10.21070/acopen.3.2020.1124. Accessed December 8, 2021. https://acopen.umsida.ac.id/index.php/acopen/article/view/1124.