Agumba, J.N. 2015. Perception of the Effects of Substance Abuse among University Students: A Case of Built Environment and Civil Engineering Students at a South African University in Gauteng Province. Journal of Economics and Behavioral Studies. 7, 4(J) (Aug. 2015), pp. 82-89. DOI:https://doi.org/10.22610/jebs.v7i4(J).596.