TREFRY, Helen E.; HOLROYD, Geoffrey L. Northern Sighting of a Burrowing Owl in Alberta. Blue Jay, [S. l.], v. 69, n. 4, p. 180–182, 2011. DOI: 10.29173/bluejay330. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/330. Acesso em: 28 mar. 2024.