ClassicsType specimens of amphibians and reptiles in the Museum of Natural History, the University of KansasWilliam Edward Duellman
ClassicsA Distributional Study of the Amphibians of the Isthmus of Tehuantepec, MéxicoWilliam Edward Duellman
ClassicsAmphibians and Reptiles of the Rainforests of Southern El Petén, GuatemalaWilliam Edward Duellman
ClassicsA New Subspecies of Lizard, Cnemidophorus sacki, from Michoacán, MéxicoWilliam Edward Duellman
ClassicsDescriptions of Two Species of Frogs, Genus Ptychohyla - Studies of American Hylid Frogs, VWilliam Edward Duellman
