Mason, S. M., Kaufman, J. S., Emch, M. E., Hogan, V. K., & Savitz, D. A. (2010). Ethnic Density and Preterm Birth in African-, Caribbean-, and US-Born Non-Hispanic Black Populations in New York City. Oxford University Press.

Mason, Susan M., Jay S. Kaufman, Michael E. Emch, Vijaya K. Hogan, och David A. Savitz. Ethnic Density and Preterm Birth in African-, Caribbean-, and US-Born Non-Hispanic Black Populations in New York City. Oxford University Press, 2010.

Mason, Susan M., et al. Ethnic Density and Preterm Birth in African-, Caribbean-, and US-Born Non-Hispanic Black Populations in New York City. Oxford University Press, 2010.