BARR, Keith. Gray Squirrels and Magpies. Blue Jay, [S. l.], v. 52, n. 3, 1994. DOI: 10.29173/bluejay5453. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5453. Acesso em: 22 nov. 2024.