Hill, H. A., Singleton, J. A., Yankey, D., Elam-Evans, L. D., Pingali, S. C., & Kang, Y. (2019). Vaccination Coverage by Age 24 Months Among Children Born in 2015 and 2016 — National Immunization Survey-Child, United States, 2016–2018. MMWR Morb Mortal Wkly Rep.

Hill, Holly A., James A. Singleton, David Yankey, Laurie D. Elam-Evans, S. Cassandra Pingali, ja Yoonjae Kang. "Vaccination Coverage By Age 24 Months Among Children Born in 2015 and 2016 — National Immunization Survey-Child, United States, 2016–2018." MMWR Morb Mortal Wkly Rep 2019.

Hill, Holly A., et al. "Vaccination Coverage By Age 24 Months Among Children Born in 2015 and 2016 — National Immunization Survey-Child, United States, 2016–2018." MMWR Morb Mortal Wkly Rep 2019.