TAYLOR, Robert R. A Southerly Record of the Willow Ptarmigan. Blue Jay, [S. l.], v. 22, n. 2, 1964. DOI: 10.29173/bluejay2693. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2693. Acesso em: 8 may. 2024.