APA (7th ed.) Citation

RA, F., SA, W., KM, R., CL, S., BT, T., AG, R., . . . Randolph, A. G. (2010). Early observational research and registries during the 2009-2010 influenza A pandemic. Critical Care Medicine, 38(4), e120. https://doi.org/10.1097/CCM.0b013e3181d20c77

Chicago Style (17th ed.) Citation

RA, Fowler, et al. "Early Observational Research and Registries During the 2009-2010 Influenza A Pandemic." Critical Care Medicine 38, no. 4 (2010): e120. https://doi.org/10.1097/CCM.0b013e3181d20c77.

MLA (9th ed.) Citation

RA, Fowler, et al. "Early Observational Research and Registries During the 2009-2010 Influenza A Pandemic." Critical Care Medicine, vol. 38, no. 4, 2010, p. e120, https://doi.org/10.1097/CCM.0b013e3181d20c77.