Bibliography

Maciel, N. M., C. A. Schwartz, G. R. Colli, M. S. Castro, W. Fontes, and E. N. F. Schwartz. 2006. A phylogenetic analysis of species in the Bufo crucifer group (Anura: Bufonidae), based on indolealkylamines and proteins from skin secretions. Biochemical Systematics and Ecology 34: 457–466.