KREBA, Bob. Review: Ravens, Crows, Magpies and Jays. Blue Jay, [S. l.], v. 37, n. 2, 1979. DOI: 10.29173/bluejay4439. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4439. Acesso em: 2 may. 2024.