"Two subfamilies are traditionally (e.g., Matheu & del Hoyo 1992) recognized: Threskiornithinae for ibises and Plataleinae for spoonbills; because the main distinction has to do with bill shape, additional information, especially genetic, is required to recognize a major, deep split in the family." "A classification of the bird species of South America". South American Classification Committee. American Ornithologists' Union. Consultado o 24 de setembro de 2015.
"Gill, F. & D. Donsker (Eds). 2010. IOC World Bird Names (version 2.4). Available at http://www.worldbirdnames.org/ [Accesso o 29 de maio de 2010].
worldcat.org
Chesser, R.Terry; Yeung, Carol K.L.; Yao, Cheng-Te; Tians, Xiu-Hua; Li Shou-Hsien (2010). "Molecular phylogeny of the spoonbills (Aves: Threskiornithidae) based on mitochondrial DNA". Zootaxa (2603): 53–60. ISSN1175-5326.