de Kloet, RS (2005). "The evolution of the spindlin gene in birds: Sequence analysis of an intron of the spindlin W and Z gene reveals four major divisions of the Psittaciformes". Molecular Phylogenetics and Evolution. 36 (3). ss. 706-721. doi:10.1016/j.ympev.2005.03.013. PMID16099384.
Schweizer, M. (2009). "The evolutionary diversification of parrots supports a taxon pulse model with multiple trans-oceanic dispersal events and local radiations". Molecular Phylogenetics and Evolution. Cilt online. s. 984. doi:10.1016/j.ympev.2009.08.021.
de Kloet, RS (2005). "The evolution of the spindlin gene in birds: Sequence analysis of an intron of the spindlin W and Z gene reveals four major divisions of the Psittaciformes". Molecular Phylogenetics and Evolution. 36 (3). ss. 706-721. doi:10.1016/j.ympev.2005.03.013. PMID16099384.
BirdLife International (2004). Melopsittacus undulatus. Tehlike altında olan türlerin 2006 IUCN Kırmızı Listesisi. IUCN 2006. 11 May 2006 tarihinde alınmıştır. Database entry includes justification for why this species is of least concern
