GERWING, Colleen. Beaver Swims Up Waterfall. Blue Jay, [S. l.], v. 43, n. 4, 1985. DOI: 10.29173/bluejay6154. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/6154. Acesso em: 23 apr. 2024.