• Colker, Laura J. "The word gap: The early years make a difference." Teaching Young Children 7.3 (2013): 26-28.
  • Hart, Betty, and Todd Risley. "The early catastrophe." American Educator 27.4 (2003): 6-9.
  • Shonkoff, Jack. "In Brief: The Science of Early Childhood Development." Center on the Developing Child. Cambridge, MA: Harvard University. Retrieved from: developingchild.harvard.edu/download_file/-/view/64 (2009).
  • Shonkoff, Jack P., et al. "The lifelong effects of early childhood adversity and toxic stress." Pediatrics 129.1 (2012): e232-e246.
  • York, Benjamin N., and Susanna Loeb. "One step at a time: the effects of an early literacy text messaging program for parents of preschoolers." Center For Education Policy Analysis at Stanford University. (2014).