A controlled trial of sildenafil in advanced idiopathic pulmonary fibrosis.

MLA

Zisman, David A., et al. “A Controlled Trial of Sildenafil in Advanced Idiopathic Pulmonary Fibrosis.” The New England Journal of Medicine, vol. 363, no. 7, Aug. 2010, pp. 620–28. EBSCOhost, https://doi.org/10.1056/NEJMoa1002110.

APA

Zisman, D. A., Schwarz, M., Anstrom, K. J., Collard, H. R., Flaherty, K. R., & Hunninghake, G. W. (2010). A controlled trial of sildenafil in advanced idiopathic pulmonary fibrosis. The New England Journal of Medicine, 363(7), 620–628. https://doi.org/10.1056/NEJMoa1002110

Chicago

Zisman, David A, Marvin Schwarz, Kevin J Anstrom, Harold R Collard, Kevin R Flaherty, and Gary W Hunninghake. 2010. “A Controlled Trial of Sildenafil in Advanced Idiopathic Pulmonary Fibrosis.” The New England Journal of Medicine 363 (7): 620–28. doi:10.1056/NEJMoa1002110.