DEVRIES, B. Range Extension of Purple Cone-Flower in Southeastern Saskatchewan. Blue Jay, [S. l.], v. 33, n. 4, 1970. DOI: 10.29173/bluejay3851. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3851. Acesso em: 3 may. 2024.