Não informado. (1915). Accident prevention magazine. Portland Cement Association.
Style de citation Chicago (17e éd.)Não informado. Accident Prevention Magazine. Chicago, Ill: Portland Cement Association, 1915.
Style de citation MLA (8e éd.)Não informado. Accident Prevention Magazine. Portland Cement Association, 1915.
Attention : ces citations peuvent ne pas être correctes à 100%.