APA-viite

Hartley, B. F., Barnes, N. C., Lettis, S., Compton, C. H., Papi, A., & Jones, P. (2020). Risk factors for exacerbations and pneumonia in patients with chronic obstructive pulmonary disease: A pooled analysis. Respir Res.

Chicago-tyylinen lähdeviittaus

Hartley, Benjamin F., Neil C. Barnes, Sally Lettis, Chris H. Compton, Alberto Papi, ja Paul Jones. "Risk Factors for Exacerbations and Pneumonia in Patients With Chronic Obstructive Pulmonary Disease: A Pooled Analysis." Respir Res 2020.

MLA-viite

Hartley, Benjamin F., et al. "Risk Factors for Exacerbations and Pneumonia in Patients With Chronic Obstructive Pulmonary Disease: A Pooled Analysis." Respir Res 2020.

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