Indrawan, M. & Somadikarta, S. (2004): A new hawk-owl from the Togian Islands, Gulf of Tomini, central Sulawesi, Indonesia. – Bulletin of the British Ornithologists’ Club, 124: 160-171.
Indrawan, M. & Somadikarta, S. (2004): A new hawk-owl from the Togian Islands, Gulf of Tomini, central Sulawesi, Indonesia — Bulletin of the British Ornithologists’ Club, 124: 160-171.