Citação norma APA

Zhang, X., & Warner, M. E. (2020). COVID-19 Policy Differences across US States: Shutdowns, Reopening, and Mask Mandates. Int J Environ Res Public Health.

Citação norma Chicago

Zhang, Xue, and Mildred E. Warner. "COVID-19 Policy Differences Across US States: Shutdowns, Reopening, and Mask Mandates." Int J Environ Res Public Health 2020.

Citação norma MLA

Zhang, Xue, and Mildred E. Warner. "COVID-19 Policy Differences Across US States: Shutdowns, Reopening, and Mask Mandates." Int J Environ Res Public Health 2020.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.