Yostian Ari Sujarwo, Samidi. Project Management and Cost Optimization in QR Code-Based Parking Reservation System Development: A PERT, Monte Carlo and PMBOK Approach. ULTIMA InfoSys [Internet]. 2025 Jun. 30 [cited 2025 Aug. 1];16(1). Available from: https://ejournals.umn.ac.id/index.php/SI/article/view/4170