Joshua, W. K. “The Impact of Covid-19 Pandemic on Water-Health-Food-Economy Nexus and Sustainable Development in Developing Countries”. European Journal of Engineering and Technology Research 5, no. 11 (November 28, 2020): 1383-1388. Accessed July 31, 2021. https://www.ejers.org/index.php/ejers/article/view/2228.