Reynolds, J. (2003). "Handbook of the Birds of the World, Vol. 7. Jacamars to Woodpeckers". Biological Conservation. 111 (2): 280–281. doi:10.1016/S0006-3207(02)00275-6.
Remsen, J.V. Jr.; Hyde, Mary Ann; Chapman, Angela (1993). "The Diets of Neotropical Trogons, Motmots, Barbets and Toucans". The Condor. 95 (1): 178–92. doi:10.2307/1369399. JSTOR1369399.
Short, L.L. & Horne, J.F.M. (2017). Toucans (Ramphastidae). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/52284 on 25 March 2017).
Remsen, J.V. Jr.; Hyde, Mary Ann; Chapman, Angela (1993). "The Diets of Neotropical Trogons, Motmots, Barbets and Toucans". The Condor. 95 (1): 178–92. doi:10.2307/1369399. JSTOR1369399.