Prakit Chaithada, Praweena Whenngean, Radchada Fungfueng and Saowanee Maungchanburee 2020. Correlation between total flavonoid content and total phenolic content on antioxidant activity of ethanol extracts from three cultivars of papaya leaves. International Journal of Research in Pharmaceutical Sciences. 11, 2 (Apr. 2020), 1883–1887.