APA aipamena

Stafyla, E., Geitona, M., Kerenidi, T., Economou, A., Daniil, Z., & Gourgoulianis, K. I. (2018). The annual direct costs of stable COPD in Greece. Int J Chron Obstruct Pulmon Dis.

Chicago Style aipamena

Stafyla, Eirini, Mary Geitona, Theodora Kerenidi, Athina Economou, Zoe Daniil, and Konstantinos I. Gourgoulianis. "The Annual Direct Costs of Stable COPD in Greece." Int J Chron Obstruct Pulmon Dis 2018.

MLA aipamena

Stafyla, Eirini, et al. "The Annual Direct Costs of Stable COPD in Greece." Int J Chron Obstruct Pulmon Dis 2018.