Cita APA

van der Molen, T., Willemse, B. W., Schokker, S., ten Hacken, N. H., Postma, D. S., & Juniper, E. F. (2003). Development, validity and responsiveness of the Clinical COPD Questionnaire. BioMed Central.

Chicago Style Citation

van der Molen, Thys, Brigitte WM Willemse, Siebrig Schokker, Nick HT ten Hacken, Dirkje S. Postma, i Elizabeth F. Juniper. Development, Validity and Responsiveness of the Clinical COPD Questionnaire. BioMed Central, 2003.

Cita MLA

van der Molen, Thys, et al. Development, Validity and Responsiveness of the Clinical COPD Questionnaire. BioMed Central, 2003.