1. Glover, D.M. (1980) Genetic Engineering: Cloning DNA (Chapman and Hall, London)
2. Old, R.W. and Primrose, S.B. (1985) Principles of Gene Manipulation: An Introduction to Genetic Engineering, 3rd edn (Blackwell Scientific Publications, Oxford, University of California Press, Berkeley and Los Angeles)
3. Setlow, J.K. and Hollaender, A. (eds) (1980) Genetic Engineering: Principles and Methods, Volumes 1 and 2 (Plenum Press, New York)
4. Williamson, R. (ed.) (1981) Genetic Engineering, Volumes 1 and 2 (Academic Press, New York)