J. Mwangi, K. Achola, W. Lwande, and A. Hassanali, “Aromatic plants of Kenya: volatile constituents of leaf oils of Sphaeranthus suaveolens (Forsk) D.C. and S. bullatus Mattf”, ECAJPS, vol. 1, no. 1, pp. 24-26, Jul. 2020.