Não informado. (2018). Monthly Review. Department of Labor, Division of Industrial Hygiene.
Chicago-referens (17:e uppl.)Não informado. Monthly Review. Albany, NY: Department of Labor, Division of Industrial Hygiene, 2018.
MLA-referens (8:e uppl.)Não informado. Monthly Review. Department of Labor, Division of Industrial Hygiene, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.