Bibliography

Bwong, B. A., R. Chira, S. Schick, M. Veith, and S. Lötters. 2009. Diversity of Ridged Frogs (Ptychadenidae: Ptychadena) in the easternmost remnant of the Guineo–Congolian rain forest: an analysis using morphology, bioacoustics and molecular genetics. Salamandra 45: 129–146.