JOHNS, B. W. Review: Watching Birds: An Introduction to Ornithology. Blue Jay, [S. l.], v. 37, n. 1, p. March 1979–37, 1979. DOI: 10.29173/bluejay4556. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4556. Acesso em: 18 may. 2024.