Cox, S., Pazol, K., Warner, L., Romero, L., Spitz, A., Gavin, L., & Barfield, W. (2014). Vital Signs: Births to Teens Aged 15–17 Years — United States, 1991–2012. MMWR Morb Mortal Wkly Rep.

Cox, Shanna, Karen Pazol, Lee Warner, Lisa Romero, Alison Spitz, Lorrie Gavin, και Wanda Barfield. "Vital Signs: Births to Teens Aged 15–17 Years — United States, 1991–2012." MMWR Morb Mortal Wkly Rep 2014.

Cox, Shanna, et al. "Vital Signs: Births to Teens Aged 15–17 Years — United States, 1991–2012." MMWR Morb Mortal Wkly Rep 2014.