1. Institute of Laboratory Animal Resources, National Research Council. Guide for the Care and Use of Laboratory Animals 56 (National Academy Press, Washington, DC, 1996).
2. Hrapkiewicz, K., Medina, L. & Holmes, D. Clinical Laboratory Animal Medicine: An Introduction 2nd edn. 16 (Iowa State University Press, Ames, IA, 1998).
3. Wolfenson, S. & Lloyd, M. Handbook of Laboratory Animal Management and Welfare 2nd edn. 112 (Blackwell Science, Oxford, UK, 1998).
4. “Interactive Course Notes, Laboratory Animal Anaesthesia, Surgery and Perioperative Care” CD-ROM by Paul Flecknell & Hannah Orr.