U.S. Department of Health and Human Services. National Institutes of Health. (2020). Coronavirus: COVID-19 [electronic resource]. U.S. Department of Health and Human Services, National Institutes of Health.
Chicagoスタイル(17版)引用形式U.S. Department of Health and Human Services. National Institutes of Health. Coronavirus: COVID-19 [electronic Resource]. Bethesda, MD: U.S. Department of Health and Human Services, National Institutes of Health, 2020.
MLA(9版)引用形式U.S. Department of Health and Human Services. National Institutes of Health. Coronavirus: COVID-19 [electronic Resource]. U.S. Department of Health and Human Services, National Institutes of Health, 2020.
警告: この引用は必ずしも正確ではありません.