APA

Barr R. G., Celli B. R., Martinez F. J., Ries A. L., Rennard S. I., Reilly J. J., Sciurba F. C., Thomashow B. M. & Wise R. A. (20060224). Physician and patient perceptions in COPD: the COPD Resource Network Needs Assessment Survey. : The American journal of medicine.

Chicago

Barr R Graham, Celli Bartolome R, Martinez Fernando J, Ries Andrew L, Rennard Stephen I, Reilly John J, Sciurba Frank C, Thomashow Byron M and Wise Robert A. 20060224. Physician and patient perceptions in COPD: the COPD Resource Network Needs Assessment Survey. : The American journal of medicine.

Harvard

Barr R. G., Celli B. R., Martinez F. J., Ries A. L., Rennard S. I., Reilly J. J., Sciurba F. C., Thomashow B. M. and Wise R. A. (20060224). Physician and patient perceptions in COPD: the COPD Resource Network Needs Assessment Survey. : The American journal of medicine.

MLA

Barr R Graham, Celli Bartolome R, Martinez Fernando J, Ries Andrew L, Rennard Stephen I, Reilly John J, Sciurba Frank C, Thomashow Byron M and Wise Robert A. Physician and patient perceptions in COPD: the COPD Resource Network Needs Assessment Survey. : The American journal of medicine. 20060224.