CLARK, Lois. The Complete Outfitting and Source Book for Bird Watching. Blue Jay, [S. l.], v. 37, n. 2, 1979. DOI: 10.29173/bluejay4441. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4441. Acesso em: 3 may. 2024.