Situmorang, Irvan Rolyesh, and Frenky Situmorang. “Implementation of Digitalization System-Based Attendance at PT. Abdi Budi Mulia”. Jurnal IPTEK Bagi Masyarakat 2, no. 2 (December 24, 2022): 83–89. Accessed September 19, 2025. https://www.journal.aira.or.id/index.php/j-ibm/article/view/437.