Donatelli, Reginaldo José. “ Cranial Osteology and Myology of the Jaw Apparatus in the Galbulidae (aves, Piciformes) ”. Arquivos de Zoologia 32, no. 1 (September 30, 1992): 1–32. Accessed July 22, 2024. https://periodicos.usp.br/azmz/article/view/12001.