Παραπομπή APA

Stafyla, E., Kerenidi, T., & Gourgoulianis, K. I. (2013). Chronic obstructive pulmonary disease exacerbation frequency and severity. Dove Medical Press.

Παραπομπή Chicago Style

Stafyla, Eirini, Theodora Kerenidi, και Konstantinos I. Gourgoulianis. Chronic Obstructive Pulmonary Disease Exacerbation Frequency and Severity. Dove Medical Press, 2013.

Παραπομπή MLA

Stafyla, Eirini, Theodora Kerenidi, και Konstantinos I. Gourgoulianis. Chronic Obstructive Pulmonary Disease Exacerbation Frequency and Severity. Dove Medical Press, 2013.

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