Cheke R., C. Mann and A. Bonan (2020). Red-capped Flowerpecker (Dicaeum geelvinkianum), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.recflo1.01
