World Health Organization. Regional Office for Europe & ebrary, Inc. (2010). Sechzig Jahre WHO in Europa. WHO-Regionalbüro für Europa.
Cita Chicago (17th ed.)World Health Organization. Regional Office for Europe i Inc ebrary. Sechzig Jahre WHO in Europa. Kopenhagen: WHO-Regionalbüro für Europa, 2010.
Cita MLA (9th ed.)World Health Organization. Regional Office for Europe i Inc ebrary. Sechzig Jahre WHO in Europa. WHO-Regionalbüro für Europa, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.