APA (7th ed.) Citation

A, V., MM, L., G, R., A, M., D, M., A, T., . . . J, S. (2021). Low serum erythropoietin levels are associated with fatal COVID-19 cases at 4,150 meters above sea level. Respiratory physiology & neurobiology, 292, 103709. https://doi.org/10.1016/j.resp.2021.103709

Chicago Style (17th ed.) Citation

A, Viruez-Soto, et al. "Low Serum Erythropoietin Levels Are Associated with Fatal COVID-19 Cases at 4,150 Meters Above Sea Level." Respiratory Physiology & Neurobiology 292 (2021): 103709. https://doi.org/10.1016/j.resp.2021.103709.

MLA (9th ed.) Citation

A, Viruez-Soto, et al. "Low Serum Erythropoietin Levels Are Associated with Fatal COVID-19 Cases at 4,150 Meters Above Sea Level." Respiratory Physiology & Neurobiology, vol. 292, 2021, p. 103709, https://doi.org/10.1016/j.resp.2021.103709.