1. & (1977). Diagrams: The instrument of thought. London: Thames and Hudson.
2. (1991). Imagery in teaching and learning. New York: Praeger.
3. Arguments concerning representations for mental imagery.
4. (1968). Educational psychology: A cognitive view. New York: Holt, Rinehart & Winston.
5. (1978). Intuitive and formal musical knowledge: Parables of cognitive dissonance. In (Ed.), The arts, cognition, and basic skills. St. Louis, CEMREL.