LEROUX, T.; LAROCHE, C. A proposal for a new federal regulation on noisy toys. Canadian Acoustics, [S. l.], v. 19, n. 4, p. 87–88, 1991. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/682. Acesso em: 21 may. 2022.