BioStor
 | Salvadori's Catalogue of the Parrots (1892) The Auk 9: 277-279 |
 | Mrs. Miller's 'Little Brothers of the Air' Olive Thorne Miller (1892) The Auk 9: 279-280 |
 | On some necessary alterations in the nomenclature of birds. Pt II G M Mathews (1911) Novitates Zoologicae 18: 1-22 |