Cita APA

Markus, I., Steffen, G., Lachmann, R., Marquis, A., Schneider, T., Tomczyk, S., . . . an der Heiden, M. (2021). COVID-19: Cross-border contact tracing in Germany, February to April 2020. Euro Surveill.

Chicago Style Citation

Markus, Inessa, et al. "COVID-19: Cross-border Contact Tracing in Germany, February to April 2020." Euro Surveill 2021.

Cita MLA

Markus, Inessa, et al. "COVID-19: Cross-border Contact Tracing in Germany, February to April 2020." Euro Surveill 2021.