Edeme, Richardson Kojo, and Nelson C. Nkalu. “Household Preferences and Willingness to Pay for Waste Management Services in Rural Nigeria”. American Economic & Social Review 3, no. 1 (November 16, 2018): 23–31. Accessed June 8, 2025. http://cribfb.com/journal/index.php/aesr/article/view/205.