Waila, Musa K. A., and Nuhu H. Tini. 2011. “Appraisal of the Extent of Environmental Education Among Students in Mubi Metropolis-Adamawa State-Nigeria”. Journal of Research in Education and Society (JRES) 2 (1):87-96. http://icidr.org.ng/index.php/Jres/article/view/1164.