KRIVDA, Walter. Cottonwood: A Rare Tree Near The Pas, Manitoba. Blue Jay, [S. l.], v. 40, n. 2, 1982. DOI: 10.29173/bluejay6176. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/6176. Acesso em: 1 may. 2024.