APA (7th ed.) Citation

File, T. M. (2010). Case Studies of Lower Respiratory Tract Infections: Community-Acquired Pneumonia. American Journal of Medicine, 123(4), S4. https://doi.org/10.1016/j.amjmed.2010.02.002

Chicago Style (17th ed.) Citation

File, Thomas M. "Case Studies of Lower Respiratory Tract Infections: Community-Acquired Pneumonia." American Journal of Medicine 123, no. 4 (2010): S4. https://doi.org/10.1016/j.amjmed.2010.02.002.

MLA (9th ed.) Citation

File, Thomas M. "Case Studies of Lower Respiratory Tract Infections: Community-Acquired Pneumonia." American Journal of Medicine, vol. 123, no. 4, 2010, p. S4, https://doi.org/10.1016/j.amjmed.2010.02.002.