APA (7th ed.) Citation

PH, C., XZ, L., Chen, P., & Lin, X. (2010). Images in clinical medicine. Hydropneumothorax. New England Journal of Medicine, 362(3), e9. https://doi.org/10.1056/NEJMicm0810434

Chicago Style (17th ed.) Citation

PH, Chen, Lin XZ, Ping-Hsien Chen, and Xi-Zhang Lin. "Images in Clinical Medicine. Hydropneumothorax." New England Journal of Medicine 362, no. 3 (2010): e9. https://doi.org/10.1056/NEJMicm0810434.

MLA (9th ed.) Citation

PH, Chen, et al. "Images in Clinical Medicine. Hydropneumothorax." New England Journal of Medicine, vol. 362, no. 3, 2010, p. e9, https://doi.org/10.1056/NEJMicm0810434.