1. Brandon, R.N.: 1982, 'The Levels of Selection', reprinted in Brandon and Burian 1984, pp. 133–141.
2. Brandon, R.N. and Burian, R.M. (eds.): 1984, Genes, Organisms, Populations: Controversies over the Units of Selection, MIT Press, Cambridge, MA.
3. Buller, D. (ed.): 1999, Function, Selection and Design, SUNY University Press, Albany.
4. Dawkins, R.: 1976, The Selfish Gene, Oxford University Press, Oxford.
5. Dawkins, R.: 1982a, The Extended Phenotype, Oxford University Press, Oxford.