Provost, Kaiya L.; Joseph, Leo; Smith, Brian Tilston (2018-01-02). "Resolving a phylogenetic hypothesis for parrots: implications from systematics to conservation". Emu - Austral Ornithology. 118 (1): 7–21. doi:10.1080/01584197.2017.1387030. ISSN0158-4197. S2CID52995298.
semanticscholar.org
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Provost, Kaiya L.; Joseph, Leo; Smith, Brian Tilston (2018-01-02). "Resolving a phylogenetic hypothesis for parrots: implications from systematics to conservation". Emu - Austral Ornithology. 118 (1): 7–21. doi:10.1080/01584197.2017.1387030. ISSN0158-4197. S2CID52995298.
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Joseph, Leo; Toon, Alicia; Schirtzinger, Erin E.; Wright, Timothy F.; Schodde, Richard (2012-02-24). "A revised nomenclature and classification for family-group taxa of parrots (Psittaciformes)". Zootaxa. 3205 (1): 26–40. doi:10.11646/zootaxa.3205.1.2. ISSN1175-5334.
Forshaw, Joseph Michael (2017). Vanished and vanishing parrots : profiling extinct and endangered species. Illustrated by Frank Knight. Collingwood: CSIRO Publishing. pp. 136–140. ISBN978-0-643-10649-9. OCLC1007061081.