Title: Understanding and Representing Space: Theory and Evidence from Studies with Blind and Sighted Children / Edition 1998, Author: Susanna Millar
Title: Children and their Environments: Learning, Using and Designing Spaces, Author: Christopher Spencer
Title: The Development of Spatial Cognition / Edition 1, Author: Robert Cohen
Title: Development of Geocentric Spatial Language and Cognition: An Eco-cultural Perspective, Author: Pierre R. Dasen
Title: Child's Conception of Space: Selected Works vol 4 / Edition 1, Author: Jean Piaget