APA (7e ed.) Bronvermelding

Não informado. (1924). Industrial hygiene bulletin. Department of Labor, Division of Industrial Hygiene.

Chicago (17e ed.) Bronvermelding

Não informado. Industrial Hygiene Bulletin. New York: Department of Labor, Division of Industrial Hygiene, 1924.

MLA (8e ed.) Bronvermelding

Não informado. Industrial Hygiene Bulletin. Department of Labor, Division of Industrial Hygiene, 1924.

Let op: Deze citaties zijn niet altijd 100% accuraat.