World Health Organization. (2020). Country & technical guidance: Coronavirus disease (COVID-19) [electronic resource]. WHO.
Chicago-viite (17. p.)World Health Organization. Country & Technical Guidance: Coronavirus Disease (COVID-19) [electronic Resource]. Geneva, Switzerland: WHO, 2020.
MLA-viite (9. p.)World Health Organization. Country & Technical Guidance: Coronavirus Disease (COVID-19) [electronic Resource]. WHO, 2020.
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