RENAUD, Wayne E.; WAPPLE, Guy J.; WAPPLE, Robert D. A Summary of Saskatchewan Christmas Bird Counts: 1942–1986. Blue Jay, [S. l.], v. 46, n. 1, 1988. DOI: 10.29173/bluejay4948. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4948. Acesso em: 5 may. 2024.