„2019 Novel Coronavirus (2019-nCoV)“. Centers for Disease Control and Prevention (11-fevral 2020-yil). — „The virus is thought to spread mainly from person-to-person ... through respiratory droplets produced when an infected person coughs or sneezes.“. 7-mart 2020-yilda asl nusxadan arxivlangan. Qaraldi: 18-fevral 2020-yil.
"The continuing 2019-nCoV epidemic threat of novel coronaviruses to global health – The latest 2019 novel coronavirus outbreak in Wuhan, China". Int J Infect Dis91: 264–66. February 2020. doi:10.1016/j.ijid.2020.01.009. PMID31953166.
"The COVID-19 epidemic". Tropical Medicine & International Healthn/a (n/a): 278–80. March 2020. doi:10.1111/tmi.13383. PMID32052514.
"The continuing 2019-nCoV epidemic threat of novel coronaviruses to global health – The latest 2019 novel coronavirus outbreak in Wuhan, China". Int J Infect Dis91: 264–66. February 2020. doi:10.1016/j.ijid.2020.01.009. PMID31953166.
"The COVID-19 epidemic". Tropical Medicine & International Healthn/a (n/a): 278–80. March 2020. doi:10.1111/tmi.13383. PMID32052514.
„Q&A on coronaviruses“. Jahon sogʻliqni saqlash tashkiloti (JSST) (11-fevral 2020-yil). — „The disease can spread from person to person through small droplets from the nose or mouth which are spread when a person with COVID-19 coughs or exhales ... The main way the disease spreads is through respiratory droplets expelled by someone who is coughing.“. 20-yanvar 2020-yilda asl nusxadan arxivlangan. Qaraldi: 24-fevral 2020-yil.
„2019 Novel Coronavirus (2019-nCoV)“. Centers for Disease Control and Prevention (11-fevral 2020-yil). — „The virus is thought to spread mainly from person-to-person ... through respiratory droplets produced when an infected person coughs or sneezes.“. 7-mart 2020-yilda asl nusxadan arxivlangan. Qaraldi: 18-fevral 2020-yil.
„Q&A on coronaviruses“. Jahon sogʻliqni saqlash tashkiloti (JSST) (11-fevral 2020-yil). — „The disease can spread from person to person through small droplets from the nose or mouth which are spread when a person with COVID-19 coughs or exhales ... The main way the disease spreads is through respiratory droplets expelled by someone who is coughing.“. 20-yanvar 2020-yilda asl nusxadan arxivlangan. Qaraldi: 24-fevral 2020-yil.