Heckman, J. J., & Smith, J. A. (1997). The sensitivity of experimental impact estimates: Evidence from the national JTPA study. National Bureau of Economic Research.
Chicago Style (17th ed.) CitationHeckman, James J., and Jeffrey A. Smith. The Sensitivity of Experimental Impact Estimates: Evidence from the National JTPA Study. Cambridge: National Bureau of Economic Research, 1997.
MLA (9th ed.) CitationHeckman, James J., and Jeffrey A. Smith. The Sensitivity of Experimental Impact Estimates: Evidence from the National JTPA Study. National Bureau of Economic Research, 1997.
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