ACO, CAO. Saskatchewan in Pictures. Canadian Journal of Optometry, [S. l.], v. 71, n. 6, p. 14, 2009. DOI: 10.15353/cjo.71.637. Disponível em: https://openjournals.uwaterloo.ca/index.php/cjo/article/view/637. Acesso em: 18 may. 2025.