Sirama, Victor Okello, John Kokwaro, Bethwell Owuor, and Yusuf Amir. “In-Vitro Anthelmintic Activity of Vernonia Amygdalina Del. (asteraceae) Roots Using Adult Haemonchus Contortus Worms”. International Journal of Pharmacological Research 5, no. 1 (February 13, 2015): 1–7. Accessed May 3, 2026. https://www.ssjournals.co.in/index.php/ijpr/article/view/1533.