Bibliography

Yamazaki, Y., S. Kouketsu, T. Fukuda, Y. Araki, and H. Nambu. 2008. Natural hybridization and directional introgression of two species of Japanese toads Bufo japonicus formosus and Bufo torrenticola (Anura: Bufonidae) resulting from changes in their spawning habitat. Journal of Herpetology 42: 427–436.