APA (7th ed.) Citation

World Health Organization. Regional Office for Europe & Offerhaus, L. (1997). Drugs for the elderly (Second edition.). World Health Organization, Regional Office for Europe.

Chicago Style (17th ed.) Citation

World Health Organization. Regional Office for Europe and L. Offerhaus. Drugs for the Elderly. Second edition. Copenhagen: World Health Organization, Regional Office for Europe, 1997.

MLA (9th ed.) Citation

World Health Organization. Regional Office for Europe and L. Offerhaus. Drugs for the Elderly. Second edition. World Health Organization, Regional Office for Europe, 1997.