Não informado. (1924). Industrial hygiene bulletin. Department of Labor, Division of Industrial Hygiene.
Cita Chicago Style (17a ed.)Não informado. Industrial Hygiene Bulletin. New York: Department of Labor, Division of Industrial Hygiene, 1924.
Cita MLA (8a ed.)Não informado. Industrial Hygiene Bulletin. Department of Labor, Division of Industrial Hygiene, 1924.
Precaución: Estas citas no son 100% exactas.