Akah, P. A., S. V. Nwafor, C. O. Okoli, and K. G. Ngwoke. “Purgative Activity of the Aqueous Leaf Extract of <I>Peninanthus longifolius</I> Miers”. Journal of Natural Remedies, vol. 1, no. 1, Jan. 2001, pp. 45-48, doi:10.18311/jnr/2001/61.