Angela Turner, Chris Rose: A Handbook to the Swallows and Martins of the World, s. 153–154. Christoopher Helms / A&C Black, 2010. ISBN 978-1-4081-3172-5. Kirja Googlen teoshaussa (viitattu 18.10.2023). (englanniksi)
BirdLife International: Pseudhirundo griseopygaIUCN Red List of Threatened Species. Version 2022-2. 2017. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 18.10.2023. (englanniksi)