Spencer, K. D., Chung, C. L., Stargel, A., Shultz, A., Thorpe, P. G., Carter, M. W., . . . Walke, H. (2021). COVID-19 Case Investigation and Contact Tracing Efforts from Health Departments — United States, June 25–July 24, 2020. MMWR Morb Mortal Wkly Rep.
Citación estilo ChicagoSpencer, Kimberly D., et al. "COVID-19 Case Investigation and Contact Tracing Efforts From Health Departments — United States, June 25–July 24, 2020." MMWR Morb Mortal Wkly Rep 2021.
Cita MLASpencer, Kimberly D., et al. "COVID-19 Case Investigation and Contact Tracing Efforts From Health Departments — United States, June 25–July 24, 2020." MMWR Morb Mortal Wkly Rep 2021.
Precaución: Estas citas no son 100% exactas.