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amphibiaweb.org
"Alsodidae". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2016. Archived from the original on 9 October 2014. Retrieved 25 April 2016.
"Alsodidae". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2016. Archived from the original on 9 October 2014. Retrieved 25 April 2016.