Thornton, Ian W. B. (2001). "Colonization of an Island Volcano, Long Island, Papua New Guinea, and an Emergent Island, Motmot, in Its Caldera Lake. I. General Introduction". Journal of Biogeography. 28 (11/12): 1299–1310. doi:10.1046/j.1365-2699.2001.00642.x. JSTOR827420.
Diamond, Jared M. (March 1989). "A New Subspecies of the Island Thrush Turdus poliocephalus from Tolokiwa Island in the Bismarck Archipelago". Emu. 89 (1): 58–60. Bibcode:1989EmuAO..89...58D. doi:10.1071/MU9890058.
Diamond, Jared M. (March 1989). "A New Subspecies of the Island Thrush Turdus poliocephalus from Tolokiwa Island in the Bismarck Archipelago". Emu. 89 (1): 58–60. Bibcode:1989EmuAO..89...58D. doi:10.1071/MU9890058.
Thornton, Ian W. B. (2001). "Colonization of an Island Volcano, Long Island, Papua New Guinea, and an Emergent Island, Motmot, in Its Caldera Lake. I. General Introduction". Journal of Biogeography. 28 (11/12): 1299–1310. doi:10.1046/j.1365-2699.2001.00642.x. JSTOR827420.