APA (7th ed.) Citation

Powell, H., Smart, J., Wood, L. G., Grissell, T., Shafren, D. R., Hensley, M. J., & Gibson, P. G. (2008). Validity of the common cold questionnaire (CCQ) in asthma exacerbations. Public Library of Science (PLoS).

Chicago Style (17th ed.) Citation

Powell, Heather, Joanne Smart, Lisa G. Wood, Terry Grissell, Darren R. Shafren, Michael J. Hensley, and Peter G. Gibson. Validity of the Common Cold Questionnaire (CCQ) in Asthma Exacerbations. Public Library of Science (PLoS), 2008.

MLA (8th ed.) Citation

Powell, Heather, et al. Validity of the Common Cold Questionnaire (CCQ) in Asthma Exacerbations. Public Library of Science (PLoS), 2008.