@book {17, title = {Amphibians of western China. Fieldiana. Zoology Memoires 2}, year = {1950}, publisher = {Chicago Natural History Museum}, organization = {Chicago Natural History Museum}, address = {Chicago}, author = {Liu, C.} } @book {4, title = {Fauna Sinica, Amphibia}, volume = {1}, year = {2006}, publisher = {Science Press}, organization = {Science Press}, address = {Beijing}, author = {L. Fei and S. Hu and Y. Huang} } @article {94, title = {IUCN Red List of Threatened Species. Version 2010.4.}, year = {2010}, month = {4/12/2011}, url = {http://www.iucnredlist.org/}, author = {IUCN} }