1. Brambell, F.W.R. (1965). Report of the Technical Committee to Enquire into the Welfare of Livestock Kept under Intensive Conditions, Her Majesty’s Stationery Office. Command Paper 2836.
2. Webster, J. (1994). Animal Welfare: A Cool Eye Towards Eden, Blackwell Science. Assessment of animal welfare: The five freedoms.
3. Mellor, D.J., and Reid, C.S.W. (1994). Improving the Well-Being of Animals in the Research Environment, Australian and New Zealand Council for the Care of Animals in Research and Teaching (ANZCCART).
4. Measuring Animal Welfare;Ryder;J. Appl. Anim. Welf. Sci.,1998
5. Mellor, D.J., Beausoleil, N.J., Littlewood, K.E., McLean, A.N., McGreevy, P.D., Jones, B., and Wilkins, C. (2020). The 2020 Five Domains Model: Including Human–Animal Interactions in Assessments of Animal Welfare. Animals, 10.