1. C. Darwin, On the Origin of Species by Means of Natural Selection, (Murray, London, 1859)
2. S. C. Stearns, The Evolution of Sex and its Consequences, (Birkhauser, Basel, 1987) and The Evolution of Sex, multi-authored special section in Science 281, 1979–2008 (1998).
3. M. Ridley, Evolution (Blackwell Science Inc., New York, 1996); C. Patterson Evolution (Routledge and Kegan Paul Publishers, London, 1978).
4. S. Kauffman, The Origins of Order, (Oxford University Press, New York, 1993) and At Home in the Universe, (Oxford University Press, New York, 1995).
5. J. Maynard Smith and E. Szathmary, The Origins of Life, (Oxford University Press, 1999).