The hylid frogs of Middle America - Duellman, William E. (William Edward), 1930 - (University of Kansas, 1970)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1891)

Iconografia della fauna italica : per le quattro classi degli animali vertebrati - Bonaparte, Charles-Lucien, 1803 -1857 (Tip. Salviucci, 1841)