Heckman, J. J. (2013). Giving kids a fair chance. MIT Press.
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Dyfyniad Arddull Chicago
Heckman, James J. Giving Kids a Fair Chance. Boston, Mass.: MIT Press, 2013.
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Dyfyniad MLA
Heckman, James J. Giving Kids a Fair Chance. MIT Press, 2013.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.