1. Hoffman SD. Updated estimates of the consequences of teen childbearing for mothers. In: Hoffman S, Maynard R, eds. Kids having kids: economic costs and social consequences of teen pregnancy. Washington, DC: The Urban Institute Press; 2008:74–118.
2. National Campaign to Prevent Teen and Unplanned Pregnancy. Counting it up: the public costs of teen childbearing. Washington, DC: National Campaign to Prevent Teen and Unplanned Pregnancy; 2013. http://thenationalcampaign.org/why-it-matters/public-cost
3. Births: final data for 2014.;Hamilton;Natl Vital Stat Rep,2015
4. Socioeconomic disadvantage as a social determinant of teen childbearing in the US.;Penman-Aguilar;Public Health Rep,2013
5. US Census Bureau. American Community Survey (ACS): technical documentation. Suitland, MD: US Census Bureau; 2015. https://www.census.gov/programs-surveys/acs/technical-documentation.html