APA (7e ed.) Bronvermelding

Não informado. (1953). Official Documents. Pan American Health Organization.

Chicago (17e ed.) Bronvermelding

Não informado. Official Documents. Washington: Pan American Health Organization, 1953.

MLA (8e ed.) Bronvermelding

Não informado. Official Documents. Pan American Health Organization, 1953.

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