Engelhardt, G. V., Gruber, J., & Perry, C. D. (2002). Social security and elderly living arrangements. National Bureau of Economic Research.
Čikaški stil citiranja (17. izdanje)Engelhardt, Gary V., Jonathan Gruber, i Cynthia D. Perry. Social Security and Elderly Living Arrangements. Cambridge: National Bureau of Economic Research, 2002.
MLA način citiranja (9. izdanje)Engelhardt, Gary V., et al. Social Security and Elderly Living Arrangements. National Bureau of Economic Research, 2002.
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