Ramadhani Said Tekka, “Contractor’s Competencies, Business Strategy and Business Performance: A Structural Model”, IJSBAR, vol. 63, no. 2, pp. 140–157, Aug. 2022, Accessed: Sep. 03, 2026. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/14335