Rödel, Mark-Oliver, Abiodun B. Onadeko, Michael F. Barej, and Laura Sandberger. 2012. “A New Polymorphic Phrynobatrachus (Amphibia: Anura: Phrynobatrachidae) from Western Nigeria”. Zootaxa 3328 (1). Auckland, New Zealand:55–65. https://doi.org/10.11646/zootaxa.3328.1.5.