Helena's marsupial frog (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Helena's marsupial frog" in English language version.

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amnh.org

Frost, Darrel R. (2016). "Gastrotheca helenae Dunn, 1944". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 13 May 2016.

Acosta-Galvis, A.R. (2015). "Gastrotheca helenae Dunn, 1944". Lista de los Anfibios de Colombia V.05.2015. www.batrachia.com. Retrieved 13 May 2016.

Cochran, Doris M.; Goin, Coleman J. (1970). "Frogs of Colombia". Bulletin of the United States National Museum. 288: 1–678. doi:10.5962/bhl.part.6346. (pages 175-177)

Bo Beolens; Michael Watkins; Michael Grayson (22 April 2013). The Eponym Dictionary of Amphibians. Pelagic Publishing. p. 153. ISBN 978-1-907807-42-8.

IUCN SSC Amphibian Specialist Group (2021). "Gastrotheca helenae". IUCN Red List of Threatened Species. 2021: e.T55339A85899122. doi:10.2305/IUCN.UK.2021-1.RLTS.T55339A85899122.en. Retrieved 16 November 2021.
Cochran, Doris M.; Goin, Coleman J. (1970). "Frogs of Colombia". Bulletin of the United States National Museum. 288: 1–678. doi:10.5962/bhl.part.6346. (pages 175-177)

IUCN SSC Amphibian Specialist Group (2021). "Gastrotheca helenae". IUCN Red List of Threatened Species. 2021: e.T55339A85899122. doi:10.2305/IUCN.UK.2021-1.RLTS.T55339A85899122.en. Retrieved 16 November 2021.

Dunn, E. R. (1944). "Notes on Colombian herpetology, II". Caldasia. 2: 397–406.