Simanjuntak, Johan Oberlyn, Bartholomeus, Salomo Simanjuntak, Partahi Lumbangaol, and Astri Agnes. “ANALISA KONTRAK PROYEK KONSTRUKSI DI INDONESIA”. Jurnal Visi Eksakta 2, no. 2 (July 30, 2021): 205-214. Accessed December 22, 2024. https://ejournal.uhn.ac.id/index.php/eksakta/article/view/394.