KLASSEN, R. W. “The Rock Pile,” Cypress Hills, Saskatchewan. Blue Jay, [S. l.], v. 55, n. 1, 1997. DOI: 10.29173/bluejay5389. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5389. Acesso em: 7 aug. 2022.