COCHRAN, D. M. and C. J. GOIN
1970. Frogs of Colombia. Bull. U.S. Natl. Mus., 288:xii+655 pp.
COPE, E. D.
1867. On the families of the raniform Anura. Jour. Acad. Nat. Sci. Philadelphia, 2:189-206.
1874. On some Batrachia and Nematognathi brought from the upper Amazon by Prof. Orton. Proc. Acad. Nat. Sci. Philadelphia, 25:120-137.
DUELLMAN, W. E.
1970a. Identity of the South American hylid frog Garbeana garbei. Copeia, (3):534-538.
1970b. The hylid frogs of Middle America. Monog. Mus. Nat. Hist., Univ. Kansas, 1:xi+753 pp.
DUMERIL, A. M. C. and G. BIBRON
1841. Erpetologie generale ou histoire naturelle complete des reptiles, vol. 8. Paris, 792 pp.
FITZINGER, L.
1843. Systema reptilium. Vienna, ix+106 pp.
FUNKHOUSER, J.
1956. New frogs from Ecuador and southwestern Colombia. Zoologica, 91:73-80.
GAIGE, H. T.
1929. Three new tree-frogs from Panama and Bolivia. Occas. Papers Mus. Zool. Univ. Michigan, 207:1-6.
GOIN, C. J.
1961. Synopsis of the genera of hylid frogs. Ann. Carnegie Mus., 36:5-18.
MELIN, D.
1941. Contribution to the knowledge of Amphibia of South America. Goeteborgs Kungl. Vetensk.-och Vitterh.-Sam. Handl., Ser. B, 1(4):1-71.
PERACCA, M. G.
1904. Viaggio del Dr. Enrico Festa nell' Ecuador e regioni vicine. Reptile ed amfibii. Boll. Mus. Zool. Anat. Comp., Univ. Torino, 19:1-41.
STEINDACHNER, F.
1862. Ueber zwei noch unbeschriebene Batrachier. Arch. Zool. Anat. Fisiol., 2:77-82.
1867. Amphibien. Novara Expedition. Zool. Theil, I, Vienna, 70 pp.
TRUEB, L.
1970a. The evolutionary relationships of casque-headed treefrogs with co-ossified skulls (family Hylidae). Univ. Kansas Publ. Mus. Nat. Hist., 18:547-716.
1970b. The generic status of Hyla siemersi Mertens. Herpetologica, 26:254-267.
A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus · The Wunder Library — complete classics, free to read, with narration.