Spodek, B., & Saracho, O. N. (2008). Contemporary perspectives on socialization and social development in early childhood education. Charlotte, N.C.: Information Age Publishing.
Spodek, B., & Saracho, O. N. (2008). Contemporary perspectives on socialization and social development in early childhood education. Charlotte, N.C.: Information Age Publishing.
Hedegaard, M. (2003). The zone of proximal development as basis for instruction. In H. Daniels (Ed.), An Introduction to Vygotsky (171-195). London: Taylor & Francis Routledge.