Kramer, M. R., & Hogue, C. R. (2008). Place Matters: Variation in the Black/White Very Preterm Birth Rate Across U.S. Metropolitan Areas, 2002–2004. Association of Schools of Public Health.
शिकागो स्टाइल उद्धरणKramer, Michael R., और Carol R. Hogue. Place Matters: Variation in the Black/White Very Preterm Birth Rate Across U.S. Metropolitan Areas, 2002–2004. Association of Schools of Public Health, 2008.
एमएलए उद्धरणKramer, Michael R., और Carol R. Hogue. Place Matters: Variation in the Black/White Very Preterm Birth Rate Across U.S. Metropolitan Areas, 2002–2004. Association of Schools of Public Health, 2008.
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