APA (7th ed.) Citation

Fitzpatrick, R., Norquist, J., & Jenkinson, C. (2004). Distribution-based criteria for change in health-related quality of life in Parkinson's disease.

Chicago Style (17th ed.) Citation

Fitzpatrick, R., J. Norquist, and C. Jenkinson. Distribution-based Criteria for Change in Health-related Quality of Life in Parkinson's Disease. 2004.

MLA (9th ed.) Citation

Fitzpatrick, R., et al. Distribution-based Criteria for Change in Health-related Quality of Life in Parkinson's Disease. 2004.