FRIESEN, Victor C. Henry Thoreau and Saskatchewan’s Natural History. Blue Jay, [S. l.], v. 32, n. 1, 1970. DOI: 10.29173/bluejay4059. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4059. Acesso em: 2 may. 2024.