SPERLING, Felix A. H. Twenty-Seven Years of Butterfly Observations at Fish Butte, Alberta. Blue Jay, [S. l.], v. 51, n. 3, 1993. DOI: 10.29173/bluejay5418. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5418. Acesso em: 3 may. 2024.