Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.