Sims, M. W., Tal-Singer, R. M., Kierstein, S., Musani, A. I., Beers, M. F., Panettieri, R. A., & Haczku, A. (2008). Chronic obstructive pulmonary disease and inhaled steroids alter surfactant protein D (SP-D) levels: A cross-sectional study. Respiratory Research, 9, 1. https://doi.org/10.1186/1465-9921-9-13
Chicago Style (17th ed.) CitationSims, Michael W., Ruth M. Tal-Singer, Sonja Kierstein, Ali I. Musani, Michael F. Beers, Reynold A. Panettieri, and Angela Haczku. "Chronic Obstructive Pulmonary Disease and Inhaled Steroids Alter Surfactant Protein D (SP-D) Levels: A Cross-sectional Study." Respiratory Research 9 (2008): 1. https://doi.org/10.1186/1465-9921-9-13.
MLA (9th ed.) CitationSims, Michael W., et al. "Chronic Obstructive Pulmonary Disease and Inhaled Steroids Alter Surfactant Protein D (SP-D) Levels: A Cross-sectional Study." Respiratory Research, vol. 9, 2008, p. 1, https://doi.org/10.1186/1465-9921-9-13.