Cita APA (7th ed.)
ebrary, Inc, & Ryan, M. M. (2011). Vital statistics of the United States: Births, life expectancy, deaths, and selected health data. 2010 (4th ed.). Bernan Press.
Cita Chicago (17th ed.)
ebrary, Inc, i Mary Meghan Ryan. Vital Statistics of the United States: Births, Life Expectancy, Deaths, and Selected Health Data. 2010. 4th ed. Lanham, Md.: Bernan Press, 2011.
Cita MLA (9th ed.)
ebrary, Inc, i Mary Meghan Ryan. Vital Statistics of the United States: Births, Life Expectancy, Deaths, and Selected Health Data. 2010. 4th ed. Bernan Press, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.