LIAO, M.; BCIT SCHOOL OF HEALTH SCIENCES, ENVIRONMENTAL HEALTH; HELEN, H. An analysis of the relationship between WHMIS certification and holder’s knowledge after being certified. BCIT Environmental Public Health Journal, [S. l.], 2021. Disponível em: https://journals.bcit.ca/index.php/ehj/article/view/181. Acesso em: 25 jun. 2022.