Ham, S. (2020). Prevention of exposure to and spread of COVID-19 using air purifiers: Challenges and concerns. Epidemiol Health.
Chicago-стиль цитированияHam, Seunghon. "Prevention of Exposure to and Spread of COVID-19 Using Air Purifiers: Challenges and Concerns." Epidemiol Health 2020.
MLA-цитированиеHam, Seunghon. "Prevention of Exposure to and Spread of COVID-19 Using Air Purifiers: Challenges and Concerns." Epidemiol Health 2020.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.