APA (7e ed.) Bronvermelding

Não informado. (1927). Public safety. National Safety Council.

Chicago (17e ed.) Bronvermelding

Não informado. Public Safety. Chicago, Ill: National Safety Council, 1927.

MLA (8e ed.) Bronvermelding

Não informado. Public Safety. National Safety Council, 1927.

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