APA (7th ed.) Citation

Costa, D. L. (2003). Race and pregnancy outcomes in the twentieth century: A long-term comparison. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Costa, Dora L. Race and Pregnancy Outcomes in the Twentieth Century: A Long-term Comparison. Cambridge, Mass: National Bureau of Economic Research, 2003.

MLA (9th ed.) Citation

Costa, Dora L. Race and Pregnancy Outcomes in the Twentieth Century: A Long-term Comparison. National Bureau of Economic Research, 2003.