del Hoyo, J.; Elliott, A.; Sargatal, J. 1999. Handbook of the Birds of the World, vol. 5: Barn-owls to Hummingbirds. Lynx Edicions, Barcelona, Spain.
Kennedy, R. S.; Gonzales, P. C.; Dickinson, E. C.; Miranda, H. C., Jr.; Fisher, T. H. 2000. A guide to the birds of the Philippines. Oxford University Press, Oxford.
Rasmussen, P.C., Allen, D.N.S., Collar, N.J., DeMeulemeester, B., Hutchinson, R.O., Jakosalem, P.G., Kennedy, R.S., Lambert, F.R. and Paguntalan, L.M. 2012. Vocal divergence and new species in the Philippine Hawk Owl Ninox philippensis complex. Forktail 28: 1-20.
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Recommended citation
BirdLife International (2023) Species factsheet: Ninox philippensis. Downloaded from
http://datazone.birdlife.org/species/factsheet/luzon-boobook-ninox-philippensis on 01/06/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 01/06/2023.