Gruber, J., & Lettau, M. (2000). How elastic is the firm's demand for health insurancen. National Bureau of Economic Research.
Čikaški stil citiranja (17. izdanje)Gruber, Jonathan, i Michael Lettau. How Elastic Is the Firm's Demand for Health Insurancen. Cambridge: National Bureau of Economic Research, 2000.
MLA način citiranja (9. izdanje)Gruber, Jonathan, i Michael Lettau. How Elastic Is the Firm's Demand for Health Insurancen. National Bureau of Economic Research, 2000.
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