APA aipamena

Waters, W. E., Heikkinen, E., & Dontas, A. S. (1989). Health, lifestyles and services for the elderly. World Health Organization, Regional Office for Europe.

Chicago Style aipamena

Waters, W. E., E. Heikkinen, and A. S. Dontas. Health, Lifestyles and Services for the Elderly. Copenhagen: World Health Organization, Regional Office for Europe, 1989.

MLA aipamena

Waters, W. E., et al. Health, Lifestyles and Services for the Elderly. World Health Organization, Regional Office for Europe, 1989.