APA (7e ed.) Bronvermelding

Não informado. (1987). WHO drug information. World Health Organization.

Chicago (17e ed.) Bronvermelding

Não informado. WHO Drug Information. Geneva, Suíça: World Health Organization, 1987.

MLA (8e ed.) Bronvermelding

Não informado. WHO Drug Information. World Health Organization, 1987.

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