APA (7th ed.) Citation

Abraham, J. (1999). Enter at your own risk: HMO participatn and enrollment in the medicare risk market. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Abraham, Jean. Enter at Your Own Risk: HMO Participatn and Enrollment in the Medicare Risk Market. Cambridge: National Bureau of Economic Research, 1999.

MLA (9th ed.) Citation

Abraham, Jean. Enter at Your Own Risk: HMO Participatn and Enrollment in the Medicare Risk Market. National Bureau of Economic Research, 1999.