1. The Developmental Psychology of Jean Piaget, Van Nostrand, Princeton, N. J., 1963, 472 + xvi.
2. The Language and Thought of the Child, Harcourt, Brace and World, New York, 1926, 246 + xxiii.
3. The Child's Conception of the World, Harcourt, Brace and World, New York, 1929, 397 + ix.
4. The Child's Conception of Number, Humanities, New York, 1952, 248 + ix.
5. and , The Growth of Logical Thinking from Childhood to Adolescence, Basic Books, New York, 1958, 356 + xxvi.