APA (7e ed.) Bronvermelding

Não informado. Progress in Standardization. World Health Organization.

Chicago (17e ed.) Bronvermelding

Não informado. Progress in Standardization. Geneva, Suíça: World Health Organization.

MLA (8e ed.) Bronvermelding

Não informado. Progress in Standardization. World Health Organization.

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