Halian, Wahana, SinagaBonar M., and NoviantiTanti. “Factors Affecting Profitability of Construction Company Sub-Sector”. Indonesian Journal of Business and Entrepreneurship (IJBE) 6, no. 2 (May 30, 2020): 118. Accessed April 25, 2024. https://journal.ipb.ac.id/index.php/ijbe/article/view/31008.