Edem, I. E., and B. Akinsola. “An Approach to Assessing Human Factors Related Occupational Safety Using Behavioural Observation-Based Indicators: The Case of a Construction Site in Nigeria”. Engineering and Applied Science Research, vol. 49, no. 2, Sept. 2021, pp. 133-45, https://ph01.tci-thaijo.org/index.php/easr/article/view/243526.