Cariño, Ma. Flerida A., and Belen Morallo-Rejesus. “ISOLATION AND CHARACTERIZATION OF THE INSECTICIDAL FRACTION FROM LEAF EXTRACTS OF Tithonia Diversifolia A. Gray”. Annals of Tropical Research, vol. 4, no. 1, Mar. 1982, pp. 1-11, https://atr.vsu.edu.ph/article/view/769.