- Libro electrónicoAmphibians and Reptiles of the Rainforests of Southern El Petén, GuatemalaWilliam Edward Duellman
- Libro electrónicoAmphibians and Reptiles of the Rainforests of Southern El Petén, GuatemalaWilliam Edward Duellman
- Libro electrónicoA Review of the Frogs of the Hyla bistincta GroupWilliam Edward Duellman
- Libro electrónicoA Distributional Study of the Amphibians of the Isthmus of Tehuantepec, MéxicoWilliam Edward Duellman
- Libro electrónicoThe Amphibians and Reptiles of Michoacán, MéxicoWilliam Edward Duellman
- Libro electrónicoA Review of the Middle American Tree Frogs of the Genus PtychohylaWilliam Edward Duellman
- Libro electrónicoA Taxonomic Study of the Middle American Snake, Pituophis deppeiWilliam Edward Duellman
- Libro electrónicoThe Genera of Phyllomedusine Frogs (AnuraWilliam Edward Duellman
- Libro electrónicoDescriptions of New Hylid Frogs From Mexico and Central AmericaWilliam Edward Duellman
- Libro electrónicoA Review of the Middle American Tree Frogs of the Genus PtychohylaWilliam Edward Duellman
- Libro electrónicoA Distributional Study of the Amphibians of the Isthmus of Tehuantepec, MéxicoWilliam Edward Duellman
- Libro electrónicoA Review of the Frogs of the Hyla bistincta GroupWilliam Edward Duellman
- Libro electrónicoThe Amphibians and Reptiles of Michoacán, MéxicoWilliam Edward Duellman
- Libro electrónicoThe Genera of Phyllomedusine Frogs (AnuraWilliam Edward Duellman
- Libro electrónicoDescriptions of New Hylid Frogs From Mexico and Central AmericaWilliam Edward Duellman