Bibliography

Nopper, J., L. N. Gonwouo, A. Hillers, L. Sandberger-Loua, A. Ohler, and M.-O. Rödel. 2012. New data on the distribution and morphology of the West African squeaker frog Arthroleptis langeri Rödel, Doumbia, Johnson & Hillers, 2009 (Amphibia: Anura: Arthroleptidae). Zootaxa 3170: 64–68.