Bibliography
Hoogmoed, M. S. 1990. Biosystematics of South American Bufonidae, with special reference to the Bufo "typhonius" group. In: Peters, G., and R. Hutterer (Ed.), Vertebrates in the Tropics. Proceedings of the International Symposium on Vertebrate Biogeography and Systematics in the Tropics, Bonn, June 5-8, 1989. Museum Alexander Koenig [Bonn], 113-123.
