Syarif H, Machfudiyanto RA. Cost Analysis of the Construction Safety Management System (SMKK) Based on Work Breakdown Structure (WBS) in an Irrigation Project. JPMR [Internet]. 2025 Oct. 14 [cited 2026 Aug. 12];1(2):44-58. Available from: https://www.journalpmresearch.com/jpmr/article/view/35