Ntore, S., Nshutiyayesu, S., Mwangoka, M., Luke, W.R.Q., Maunder, M., Kalema, J., Kabuye, C., Gereau, R. & Beentje, H.J: Crossandra infundibuliformisIUCN Red List of Threatened Species. Version 2022-1. 2017. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 14.9.2022. (englanniksi)
