Cita APA

Welch, H. G., Sharp, S. M., Gottlieb, D. J., Skinner, J. S., & Wennberg, J. E. (2011). Geographic Variation in Diagnosis Frequency and Risk of Death Among Medicare Beneficiaries.

Chicago Style Citation

Welch, H. Gilbert, Sandra M. Sharp, Dan J. Gottlieb, Jonathan S. Skinner, i John E. Wennberg. Geographic Variation in Diagnosis Frequency and Risk of Death Among Medicare Beneficiaries. 2011.

Cita MLA

Welch, H. Gilbert, et al. Geographic Variation in Diagnosis Frequency and Risk of Death Among Medicare Beneficiaries. 2011.