Zakaria, Balqis, et al. “Kajian Kepentingan Keupayaan Kepimpinan Kontraktor G7 Dalam Mengurus Projek Pembinaan”. Research in Management of Technology and Business, vol. 2, no. 1, June 2021, pp. 1096-12, https://periodical.uthm.edu.my/index.php/rmtb/article/view/2046.