E. T. Andrew, M. M. Adeyemi, and L. Salihu, “In vitro antiplasmodial activity and phytochemical screening of Alstonia boonei De wild used in treating malaria-associated symptoms”, Int J of Pharmc Res, vol. 5, no. 9, pp. 207–213, Sep. 2015, doi: 10.7439/ijpr.v5i9.2416.