Fasola, Taiye R, BO Olagunju, and ABC Robert. “Correlating Bark Thickness and Girth of Some Medicinal Trees”. International Journal of Environment 3, no. 2 (June 21, 2014): 287–301. Accessed April 25, 2024. https://www.nepjol.info/index.php/IJE/article/view/10642.