Costa, D. L. (1997). Unequal at birth: A long-term comparison of income and birth weight. National Bureau of Economic Research.
Chicago Style (17. basım) AtıfCosta, Dora L. Unequal at Birth: A Long-term Comparison of Income and Birth Weight. Cambridge: National Bureau of Economic Research, 1997.
MLA (9th ed.) AtıfCosta, Dora L. Unequal at Birth: A Long-term Comparison of Income and Birth Weight. National Bureau of Economic Research, 1997.
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