Bawa, B., Sharif, N., Hashim, T., Ahmad, B.B., Abbas, L.S., Shehu, I.S., and Njinga, N.S. 2015. “ Gusau- Nigeria”. International Journal of Science for Global Sustainability 1 (1):8. https://fugus-ijsgs.com.ng/index.php/ijsgs/article/view/296.