Lokina, Razack, and Gloria Mapunda. “Willingness to Switch From Charcoal to Alternative Energy Sources in Dar Es Salaam, Tanzania”. UDSM Online Journal Testing 5, no. 1-2 (December 31, 2015): 36–53. Accessed January 9, 2025. https://testojs.udsm.ac.tz/index.php/ter/article/view/16.