Kayode, Aremu James, and Olatunde Adewale Francis. “Drought Intensities in the Sudano-Sahelian Region of Nigeria”. Journal of Sustainable Society 1, no. 4 (December 23, 2012): 88–95. Accessed May 8, 2024. http://worldscholars.org/index.php/jss/article/view/225.