World Health Organization. Regional Office for the Americas. (2020). Coronavirus virus disease (COVID-19) outbreak: Americas [electronic resource]. Pan American Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Regional Office for the Americas. Coronavirus Virus Disease (COVID-19) Outbreak: Americas [electronic Resource]. Washington, D.C: Pan American Health Organization, 2020.
MLA-Zitierstil (9. Ausg.)World Health Organization. Regional Office for the Americas. Coronavirus Virus Disease (COVID-19) Outbreak: Americas [electronic Resource]. Pan American Health Organization, 2020.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.