Bikram Grewal: A Photographic Field Guide to the Birds of India, Pakistan, Nepal, Bhutan, Sri Lanka, and Bangladesh, s. 318. Princeton University Press, 2017. ISBN 978-0-691-17649-9Kirja Googlen teoshaussa (viitattu 9.12.2023). (englanniksi)
Richard Grimmett, Carol Inskipp, Tim Inskipp: Birds of the Indian Subcontinent. Bloombury Publishing, 2016. ISBN 978-1-4081-2763-6Kirja Googlen teoshaussa (viitattu 9.12.2023). (englanniksi)
iucnredlist.org
BirdLife International: Dryocopus hodgeiIUCN Red List of Threatened Species. Version 2022-2. 2017. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 2.4.2023. (englanniksi)