World Health Organization. (2020). Corona virus disease: COVID-19 pandemic [electronic resource]. WHO.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Corona Virus Disease: COVID-19 Pandemic [electronic Resource]. Geneva, Switzerland: WHO, 2020.
MLA-Zitierstil (9. Ausg.)World Health Organization. Corona Virus Disease: COVID-19 Pandemic [electronic Resource]. WHO, 2020.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.