Wahab, I.R. and Boylan, F. 2021. Chemotaxonomic Significance of the C-glycosylflavonoid (Vitexin) in Pereskia bleo Kunth. (Cactaceae): doi.org/10.26538/tjnpr/v5i2.1. Tropical Journal of Natural Product Research (TJNPR). 5, 2 (Feb. 2021), 225–228.