1. Early intervention: The next steps;Allen,2011
2. Understanding early years policy;Baldock,2013
3. ‘Head start’s lasting benefits’;Barnett;Infants & Young Children,2005
4. Toddlers from low-income families have below normal mental, motor, and behavior scores on the revised Bayley scales;Black;Journal of Applied Developmental Psychology,2000
5. Patterns in identification of and outcomes for children and youth with disabilities: Final Report;Blackorby,2010