GOLLOP, Bernie. A Selected, Annotated Bibliography for Saskatchewan Butterfly Watchers. Blue Jay, [S. l.], v. 47, n. 2, 1989. DOI: 10.29173/bluejay4881. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4881. Acesso em: 19 apr. 2024.