APA (7e ed.) Bronvermelding

Não informado. (1969). WHO library acquisitions. World Health Organization.

Chicago (17e ed.) Bronvermelding

Não informado. WHO Library Acquisitions. Geneva, Suíça: World Health Organization, 1969.

MLA (8e ed.) Bronvermelding

Não informado. WHO Library Acquisitions. World Health Organization, 1969.

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