Waters, W. E., Heikkinen, E., & Dontas, A. S. (1989). Health, lifestyles and services for the elderly. World Health Organization, Regional Office for Europe.
Citazione stile Chigago Style (17a edizione)Waters, W. E., E. Heikkinen, e A. S. Dontas. Health, Lifestyles and Services for the Elderly. Copenhagen: World Health Organization, Regional Office for Europe, 1989.
Citatione MLA (9a ed.)Waters, W. E., et al. Health, Lifestyles and Services for the Elderly. World Health Organization, Regional Office for Europe, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.