Nina-okpousung, M. O. (2011) “Library Policies and Overdue Materials in Delta State Polytechnic Libraries, Nigeria”, Journal of Research in Education and Society (JRES) , 2(1), pp. 199–207. Available at: http://icidr.org.ng/index.php/Jres/article/view/1179 (Accessed: 19 September 2024).