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 : Jurnal Ilmu Sistem Informasi, [S. l.], v. 16, n. 1, 2025. DOI: 10.31937/si.v16i1.4170. Disponível em: https://ejournals.umn.ac.id/index.php/SI/article/view/4170. Acesso em: 1 aug. 2025.