Style de citation APA

World Health Organisation. (1989). Health of the elderly World Health organisation. World Health Organisation.

Style de citation Chicago

World Health Organisation. Health of the Elderly World Health Organisation. Geneva: World Health Organisation, 1989.

Style de citation MLA

World Health Organisation. Health of the Elderly World Health Organisation. World Health Organisation, 1989.

Attention : ces citations peuvent ne pas être correctes à 100%.