Bibliography

Arntzen, J. W., J. McAtear, J. M. Ziermann, A. Ohler, J. van Alphen, and Í. Martínez-Solano. 2013. Morphological and genetic differentiation of Bufo toads: two cryptic species in Western Europe (Anura, Bufonidae). Contributions to Zoology. Amsterdam 82: 147–169.