APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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