Hutchinson, J. (1931). General Smuts’ Botanical Expedition to Northern Rhodesia, 1930. Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew), 1931(5), 225–254. https://doi.org/10.2307/4102484
Kennedy, M. P., & Murphy, K. J. (2012). "A picture guide to aquatic plants of Zambian rivers." SAFRASS Deliverable Report to the African, Caribbean and Pacific Group of States (ACP Group) Science and Technology Programme. University of Aberdeen, UK, 25.