APA (7th ed.) Citation

World Health Organization Regional Office for Europe. (1991). Clinical pharmacology: The european challenge. World Health Organization, Regional Office for Europe.

Chicago Style (17th ed.) Citation

World Health Organization Regional Office for Europe. Clinical Pharmacology: The European Challenge. Copenhagen: World Health Organization, Regional Office for Europe, 1991.

MLA (9th ed.) Citation

World Health Organization Regional Office for Europe. Clinical Pharmacology: The European Challenge. World Health Organization, Regional Office for Europe, 1991.