− | Svendsen, E.D., Duncan, J. and Hadrill, D. (2008) ''The Professional Handbook of the Donkey'', 4th edition, Whittet Books, Appendix 1
| + | Burden, F.A., Getachew, M., Hazell-Smith, E., Patrick, V., Trawford, R., Brooks Brownlie, H. November 2015. Reference intervals for biochemical and haematological parameters in mature domestic donkeys (Equus asinus) in the UK. Equine Veterinary Education. |