APA (7th ed.) Citation

DM, M., VF, C., Musher, D. M., & Corrales-Medina, V. F. (2011). Azithromycin for prevention of exacerbations of COPD. New England Journal of Medicine, 365(23), 2234. https://doi.org/10.1056/NEJMc1111248

Chicago Style (17th ed.) Citation

DM, Musher, Corrales-Medina VF, Daniel M. Musher, and Vicente F. Corrales-Medina. "Azithromycin for Prevention of Exacerbations of COPD." New England Journal of Medicine 365, no. 23 (2011): 2234. https://doi.org/10.1056/NEJMc1111248.

MLA (9th ed.) Citation

DM, Musher, et al. "Azithromycin for Prevention of Exacerbations of COPD." New England Journal of Medicine, vol. 365, no. 23, 2011, p. 2234, https://doi.org/10.1056/NEJMc1111248.