APA (7e ed.) Bronvermelding

Não informado. (1974). CIS abstracts. International Safety and Health Information Centre.

Chicago (17e ed.) Bronvermelding

Não informado. CIS Abstracts. Geneva, Suíça: International Safety and Health Information Centre, 1974.

MLA (8e ed.) Bronvermelding

Não informado. CIS Abstracts. International Safety and Health Information Centre, 1974.

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