Παραπομπή APA

Wedzicha, J. A., & Seemungal, T. A. (2007). COPD exacerbations: Defining their cause and prevention. Lancet.

Παραπομπή Chicago Style

Wedzicha, Jadwiga A., και Terence AR Seemungal. "COPD Exacerbations: Defining Their Cause and Prevention." Lancet 2007.

Παραπομπή MLA

Wedzicha, Jadwiga A., και Terence AR Seemungal. "COPD Exacerbations: Defining Their Cause and Prevention." Lancet 2007.

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