Franklin

MLA

A Pound of Flesh Or Just Proxy? Using Twin Differences to Estimate the Effect of Birth Weight On Life Chances. Cambridge, Mass: National Bureau of Economic Research, .

APA

A Pound of Flesh or Just Proxy? Using Twin Differences to Estimate the Effect of Birth Weight on Life Chances. Cambridge, Mass: National Bureau of Economic Research.

Chicago

A Pound of Flesh Or Just Proxy? Using Twin Differences to Estimate the Effect of Birth Weight On Life Chances. Cambridge, Mass: National Bureau of Economic Research.