Nicholas Chileshe, and Adwoa Boadua Yirenkyi-Fianko. “Perceptions of Threat Risk Frequency and Impact on Construction Projects in Ghana: Opinion Survey Findings”. Journal of Construction in Developing Countries 16, no. 2 (December 31, 2011): 115–149. Accessed August 16, 2026. https://ejournal.usm.my/jcdc/article/view/jcdc_vol16no-2-2011_6.