Nathan, C., E. B. Bwala, A, A, Barnabas, and A. M. Damilare. “Development of a Clay Biodigester”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 21, no. 1 (March 2, 2025): 192-201. Accessed March 9, 2025. https://azojete.com.ng/index.php/azojete/article/view/1022.