References
- Inhelder , Barbel and Piaget , Jean . 1958 . The Growth of Logical Thinking from Childhood to Adolescence , Edited by: Parsons , Anne and Milgram , Stanley . New York : Basic Books, Inc. .
- Lovell , Kenneth , Healey , D. and Rowland , A. D. 1962 . “Growth of Some Geometrical Concepts” . Child Development , 33 : 751 – 69 .
- Lovell , Kenneth , Mitchell , B. and Everett , I. R. 1962 . “An Experimental Study of the Growth of Some Logical Structures” . The British Journal of Psychology , 53 : 175 – 88 .
- Sigel , Irving E. and Hooper , Frank H. 1968 . Logical Thinking in Children , 140 – 57 . 224 – 40 . New York : Holt, Rinehart and Winston . The papers are reprinted also in
- Almy , Milly , Chittenden , Edward and Miller , Paula . 1966 . Young Children's Thinking , New York : Teachers College Press, Columbia University .