APA (7e ed.) Bronvermelding

Não informado. (1937). Industrial hygiene digest. Industrial Hygiene Foundation of America.

Chicago (17e ed.) Bronvermelding

Não informado. Industrial Hygiene Digest. Pittsburgh, Pa: Industrial Hygiene Foundation of America, 1937.

MLA (8e ed.) Bronvermelding

Não informado. Industrial Hygiene Digest. Industrial Hygiene Foundation of America, 1937.

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