Lichtenberg, F. R. (2001). Sources of U.S. longevity increase, 1960-1997. National Bureau of Economic Research.
Čikaški stil citiranja (17. izdanje)Lichtenberg, Frank R. Sources of U.S. Longevity Increase, 1960-1997. Cambridge: National Bureau of Economic Research, 2001.
MLA način citiranja (9. izdanje)Lichtenberg, Frank R. Sources of U.S. Longevity Increase, 1960-1997. National Bureau of Economic Research, 2001.
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