1. Vision and contact (Ch. 8). In: Emergent evolution. London: Williams and Norgate; 1923. p 210-242.
2. Light. The spatial envelope. In: The shape of space: Designing with space and light. New York: Wiley; 1996. p 102-121.
3. Colour perception in the contemporary man-made environment: Designing for multi-consciousness. Atti della Fondazione Giorgio Ronchi, anno Lll, N.6, 1997, Firenze, pp 773-794.
4. Emergence (Ch.1). In: Emergent evolution. London: Williams and Norgate; 1923. p 1-34.
5. On the meaning of life?the order of nature and the form of intelligence. In: Mitchell A, translator. Creative evolution. New York: Henry Holt and Co.; 1911. p 186-271.