APA (7th ed.) Citation

Costa, D. L. (1997). Unequal at birth: A long-term comparison of income and birth weight. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Costa, Dora L. Unequal at Birth: A Long-term Comparison of Income and Birth Weight. Cambridge, MA: National Bureau of Economic Research, 1997.

MLA (9th ed.) Citation

Costa, Dora L. Unequal at Birth: A Long-term Comparison of Income and Birth Weight. National Bureau of Economic Research, 1997.