1. Banton, M. (1987) Racial Theories (Cambridge University Press).
2. Bertram, G. C. L. (1958) West Indian Immigration (London: The Eugenics Society).
3. Darwin, C. (1859) On the Origin of Species (London: Murray).
4. Driver, H. E. and R. P. Chaney (1970) ‘Cross-Cultural Sampling and Gal-ton’s Problem’, in N. Naroll and R. Cohen (eds), A Handbook of Method in Cultural Anthropology, pp. 990–1003, (New York: Columbia University Press).
5. Elliot-Smith, G. (1924) ‘Problems of Race’, reprinted in 1968 in Eugenics Review, vol. 60, pp. 25–31.