BioStor
 | June 3, 1873 Viscount Waldeu (1873) Proceedings of The Zoological Society of London 1873: 517-554 |
 | On the Fruit-Pigeons of the Genus Ptilopus D G Elliot (1878) Proceedings of The Zoological Society of London 1878: 500-575 |
 | Notes on Pigeons (1918) Novitates Zoologicae 25: 346-358 |
 | Collections from the Philippine Islands Thomas Barbour, Barbara Lawrence and James L Peters (1939) Bulletin Museum of Comparative Zoology Harvard 86: 25-128 |
 | Type-specimens of birds in the British Museum (Natural History). Vol. 3. Systematic index Rachel L M Warren and C J O Harrison (1973) |
 | The avifauna of Mt. Kitanglad, Bukidnon Province, Mindanao, Philippines A Townsend Peterson, Thomas Brooks et al. (2008) Fieldiana Zoology 114: 1-43 |