Umar, I. M., B. M. Sheriff, and B. B. Muhammad. “Assessment of Arsenic in Groundwater in Monguno, Borno State, Nigeria”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 19, no. 4, Dec. 2023, pp. 733-46, https://www.azojete.com.ng/index.php/azojete/article/view/802.