Ali Imron M, Teki Tjendani H, Witjaksana B. Analysis of Factors Causing Variation Order In Construction Projects of PT. Tatamulia Nusantara Indah Surabaya Branch Office 2018-2022 Period. devotion [Internet]. 2022 Dec. 29 [cited 2026 Jun. 25];3(14):2695-706. Available from: https://devotion.greenvest.co.id/index.php/dev/article/view/328