APA aipamena

Russell. (2013). Managing COPD (3.). Springer Healthcare Ltd..

Chicago Style aipamena

Russell. Managing COPD. 3. Springer Healthcare Ltd., 2013.

MLA aipamena

Russell. Managing COPD. 3. Springer Healthcare Ltd., 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.