Oraegbune, M.O., O.O. Ugwu, C.U. Nwoji, and G.C. Ezeokpube. 2015. “Achieving Sustainability in Transportation Infrastructure Projects (Roads): A Nigeria Case Study”. Journal of Environmental Science and Engineering Technology 3 (1):21-28. https://doi.org/10.12974/2311-8741.2015.03.01.3.