Kleijer-Ligtenberg, G., T. Van Asseldonk, M. Groot, B. Halkes, G. Binnendijk, and J. Wagenaar Johanna. 2009. “HERBAL PRODUCTS FOR PIG HEALTH”. African Journal of Traditional, Complementary and Alternative Medicines 6 (May):470-71. https://athmsi.org/journals/index.php/ajtcam/article/view/918.