LYLE, W.H. The Optometrist’s Balance Sheet. Canadian Journal of Optometry, [S. l.], v. 42, n. 3, p. 2, 1980. DOI: 10.15353/cjo.v42i3.4120. Disponível em: https://openjournals.uwaterloo.ca/index.php/cjo/article/view/4120. Acesso em: 26 jul. 2024.