Cazzola, M., Anzueto, A., Blasi, F., & Sethi, S. P. (2009). Acute Exacerbations in COPD. NetLibrary, Incorporated.
Lua i Stíl Chicago (17ú heag.)Cazzola, Mario, A. Anzueto, F. Blasi, agus S. Prakash Sethi. Acute Exacerbations in COPD. Boulder: NetLibrary, Incorporated, 2009.
Lua MLA (9ú heag.)Cazzola, Mario, et al. Acute Exacerbations in COPD. NetLibrary, Incorporated, 2009.
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