APA (7e ed.) Bronvermelding

Não informado. (1985). National safety and health news. National Safety Council.

Chicago (17e ed.) Bronvermelding

Não informado. National Safety and Health News. Chicago, Ill: National Safety Council, 1985.

MLA (8e ed.) Bronvermelding

Não informado. National Safety and Health News. National Safety Council, 1985.

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