Aigbokhan, O., O. Pelemo, C. Agbor, and I. Adamu. “Forest Canopy Density Analysis of Sokpomba Forest Reserve, Edo State”. Journal of Research in Forestry, Wildlife and Environment, vol. 12, no. 4, Mar. 2021, pp. 116-27, https://www.ajol.info/index.php/jrfwe/article/view/204358.