Azeez, G., E. Dada, M. Muriana, I. Lawal, and A. Arinkoola. “MODIFICATION OF NIGERIAN BENTONITE FOR UTILIZATION IN OIL WELL DRILLING OPERATIONS”. LAUTECH Journal of Engineering and Technology, Vol. 12, no. 1, Mar. 2019, pp. 74-84, https://www.laujet.com/index.php/laujet/article/view/319.