Gondosiswanto, Filbert Chance, and Andi Andi. “ANALISIS UNSAFE ACT DAN UNSAFE CONDITION PADA PROYEK PEMBANGUNAN GEDUNG X”. Dimensi Utama Teknik Sipil 4, no. 1 (April 28, 2017): 9–14. Accessed May 8, 2024. https://duts.petra.ac.id/index.php/duts/article/view/91.