Hyperolius howelli Du Preez and Channing in Channing, Hillers, Lötters, Rödel, Schick, Conradie, Rödder, Mercurio, Wagner, Dehling, Du Preez, Kielgast, and Burger, 2013
↑Frost, Darrel R. 2014. Amphibian Species of the World: an Online Reference. Version 6.0 (13/10/2014). Base de dados electrónica accesível em http://research.amnh.org/herpetology/amphibia/index.html. American Museum of Natural History, New York, USA.