Elizabeth H. Kyssima, Dennis N.G.A.K. Tesha, Didas S. Lello, and Flaviana S. Mtitu, “Profit Maximization Strategies Employed by the Small and Medium Size Building Contractors in Dar-Es-Salaam, Tanzania”, int. j. eng. mgmt. res., vol. 10, no. 1, pp. 92–110, Feb. 2020.