Não informado. (1985). National safety and health news. National Safety Council.
Style de citation Chicago (17e éd.)Não informado. National Safety and Health News. Chicago, Ill: National Safety Council, 1985.
Style de citation MLA (8e éd.)Não informado. National Safety and Health News. National Safety Council, 1985.
Attention : ces citations peuvent ne pas être correctes à 100%.