1. The mating pattern of Bufo americanus, Bufo fowleri and Bufo terrestris;Aronson;American Museum Novitates,1944
2. Calling song displacement in a zone of overlap and hybridization;Benedix;Evolution,1991
3. Variation, isolation mechanisms and hybridization in certain toads;Blair;Genetics,1941
4. Isolating mechanisms in a complex of four species of toads;Blair;Biological Symposia,1942
5. The male warning vibration in Bufo;Blair;American Museum Novitates,1947