LANE, John. Hybridism in the Eastern and Mountain Bluebirds. Blue Jay, [S. l.], v. 27, n. 1, 1969. DOI: 10.29173/bluejay3609. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3609. Acesso em: 10 apr. 2025.