Veronica O. , Ezigbo,. “ Isolation and Characterization of the Basic Metabolites of the Methanol Extract of the Leaves of Rose Flower ”. African Journal of Education,Science and Technology (AJEST), vol. 3, no. 2, Apr. 2016, pp. Pg 27-29, http://ajest.org/index.php/ajest/article/view/180.