Abraham, Nsikak A., Lucky O. Odokuma, and Gideon C. Okpokwasilli. “Toxicity of Raw and Bio Slurry Treated Oily Sludge on Nitrobacter Species and Tilapia Guineensis”. GSC Advanced Research and Reviews 8, no. 3 (September 30, 2021): 087–092. Accessed February 2, 2025. https://gsconlinepress.com/journals/index.php/gscarr/article/view/gscarr-2021-0193.