Bichi, A. A., Iguisi, E. O., Bello, A. L., Oladipo, M. O. A., Butu, A. W., and Tasiu Y. R. 2016. “Spatial Distribution of Some Heavy Metals in Sediments in the River Hadejia Catchment, Nigeria”. International Journal of Science for Global Sustainability 2 (2):10. https://fugus-ijsgs.com.ng/index.php/ijsgs/article/view/253.