Psittaciformes

‎Classis/Infraclassis: Aves
Infraclassis/Cohors: Neognathae
Cladus: Neoaves
Cladus: Australaves
Ordo: Psittaciformes
Familiae: Cacatuidae – Psittacidae – Psittaculidae – Strigopidae

Psittaciformes Wagler, 1830: 80 ["Psittaci"]

• Wagler, J.G. 1830. Natürliches System der Amphibien, mit vorangehender Classification der Säugetiere und Vögel. Ein Beitrag zur vergleichenden Zoologie. J.G. Cotta'schen Buchhandlung: München, Stuttgart, & Tübingen. 354 pp. BHL Reference page. 

• Joseph, L., Toon, A., Schirtzinger, E.E., Wright, T.F. & Schodde, R. 2012. A revised nomenclature and classification for family-group taxa of parrots (Psittaciformes). Zootaxa 3205: 26–40 DOI: 10.11646/zootaxa.3205.1.2 Full article (PDF) Reference page. 
• Juniper, T., & Parr, M. (1998). Parrots. A guide to parrots of the world. Yale University Press, New Haven, CT. ISBN 9780300074536
• Wright, T. F., Schirtzinger, E. E., Matsumoto, T., Eberhard, J. R., Graves, G. R., Sanchez, J. J., Capelli, S., Müller, H., Scharpegge, J., Chambers, G. K., & Fleischer, R. C. (2008). A multilocus molecular phylogeny of the parrots (Psittaciformes): support for a Gondwanan origin during the Cretaceous. Molecular biology and evolution 25: 2141–2156. DOI: 10.1093/molbev/msn160
• Schweizer, M., Seehausen, O., Güntert, M., & Hertwig, S. T. (2010): The evolutionary diversification of parrots supports a taxon pulse model with multiple trans-oceanic dispersal events and local radiations. Molecular phylogenetics and evolution 54 (3): 984–994 DOI: 10.1016/j.ympev.2009.08.021.

• Parrots, cockatoos – IOC World Bird List v12.1