M. Alfarozy Syahputra, and Tengku Adlin Ahmad Albab. “Effectiveness of QR Code-Based Prisoner Data Management System: Implementation of Community Service at Class IIB Pangkalan Brandan Prison, Indonesia”. Young Journal of Social Sciences and Humanities, vol. 1, no. 3, Dec. 2025, pp. 221-9, https://journal.sufiya.org/index.php/yjssh/article/view/207.