Laibson, D., & Tobacman, J. (2000). A debt puzzle. National Bureau of Economic Research.
Čikaški stil citiranja (17. izdanje)Laibson, David, i Jeremy Tobacman. A Debt Puzzle. Cambridge: National Bureau of Economic Research, 2000.
MLA način citiranja (9. izdanje)Laibson, David, i Jeremy Tobacman. A Debt Puzzle. National Bureau of Economic Research, 2000.
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