Gyamfi, Timothy Adu, Richmond Boadaa, and Benjamin Adu-Fosu. “Risk Analysis of Procurement Options: Implications for Construction Firms in Ghana”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 28, no. 1 (June 20, 2016): 90–102. Accessed November 11, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/5163.