“Web-Based Information System for the Professional Certification Institute P-1 at Politeknik Negeri Ketapang”. Applied Information Technology and Computer Science (AICOMS) 1, no. 1 (December 1, 2022): 25–33. Accessed December 24, 2025. https://jurnal.politap.ac.id/index.php/aicoms/article/view/1233.