1. Allen D., 2020 – Birds of the Philippines. Lynx Edicions, Barcelona.
2. BirdLife International., 2023 – Important Bird Areas factsheet: Bataan Natural Park and Subic Bay Forest Reserve. (retrieved on June 13, 2023).
3. BMB-DENR, 2020 – Philippine Red List of threatened wild fauna Part 1. Vertebrates. Biodiversity Management Bureau, Department of Environment and Natural Resources, Manila (Philippines).
4. Bock C., 1970 – The Ecology and Behavior of the Lewis Woodpecker (Asyndesmus lewis). University of California Press, Berkeley, CA (USA).
5. Chazarreta M. L., Ojeda V. S. & Trejo A., 2011 – Division of labour in parental care in the Magellanic Woodpecker Campephilus magellanicus. Journal of Ornithology, 152: 231-242.