Odewusi, Odeyinka (2015). "Natriuretic effect of aqueous vernonia amygdalina extract". Science Journal of Medicine and Clinical Trials. SJMCT-168. Do/sjmct /168. doi:10.7237/sjmct/168 (inactive 1 November 2024).{{cite journal}}: CS1 maint: DOI inactive as of November 2024 (link)
Huffman, M.A.; Seifu, M. (1989). "Observations on the illness and consumption of a possibly medicinal plant Vernonia amygdalina (Del.), by a wild chimpanzee in the Mahale Mountains National Park, Tanzania". Primates. 30: 51–63. doi:10.1007/BF02381210. S2CID12090279.
Huffman, M.A.; Seifu, M. (1989). "Observations on the illness and consumption of a possibly medicinal plant Vernonia amygdalina (Del.), by a wild chimpanzee in the Mahale Mountains National Park, Tanzania". Primates. 30: 51–63. doi:10.1007/BF02381210. S2CID12090279.