Okoro, Chioma Sylvia, Innocent Musonda, and Justus Ngala Agumba. “Validity and Reliability of a Transportation Infrastructure Sustainable Performance Framework: A Study of Transport Projects in South Africa: A Study of Transport Projects in South Africa.”. Construction Economics and Building 19, no. 2 (November 12, 2019). Accessed November 22, 2024. https://epress.lib.uts.edu.au/journals/index.php/AJCEB/article/view/6730.