W. A. Rahman, C. F. Yong, and S. F. Sulaiman, “In-vitro Anthelmintic activity of Smilax myosotiflora Plant (locally known as Ubi Jaga) Extracts Against Haemonchus contortus Worms in Goats”, Malaysian J. Sci., vol. 29, no. 2, pp. 129–136, Aug. 2010.