1. Ackley, G. (1951). The wealth-saving relationship. Journal of Political Economy, 59(2), 154–161.
2. Afram, S. O., Bangdome-dery, A., Eghan, G. E., & Kwofie, T. E. (2015). Analysis of causes of delay in middle and high income self-build housing projects (SBHPs) in Wa, Ghana. Journal of Building Construction and Planning Research, 3, 171–179. https://doi.org/10.4236/jbcpr.2015.34017 .
3. African Development Bank. (2011). The middle of the pyramid: Dynamics of the middle class in Africa. Abidjan. Retrieved from https://www.afdb.org/fileadmin/uploads/afdb/Documents/Publications/TheMiddleofthePyramid_TheMiddleofthePyramid.pdf .
4. Ahadzie, D. K., & Amoa-Mensah, K. (2010). Management practices in the Ghanaian house building industry. Journal of Science and Technology, 30(2), 62–75.
5. Ahadzie, D. K., & Badu, E. (2011). Success indicators for selfbuild houses in two Ghanaian cities. Journal of Science and Technology, 31(3), 86–96.