Ptychadeny a hildebry (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ptychadeny a hildebry" in Czech language version.

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42^nd place

amnh.org

Ptychadenidae Dubois, 1987 [online]. Amphibian Species of the World 6.1, an Online Reference [cit. 2022-06-22]. Dostupné online. (anglicky)

Ptychadenidae [online]. Berkeley, California: Amphibia Web [cit. 2022-06-22]. Dostupné online. (anglicky)

FROST, Darrel R. & kol. The Amphibian Tree of Life. Bulletin of the American Museum of Natural History. 2006. DOI 10.5531/sd.sp.13.