1. Daly, H.W. (2001) Manual of pack transportation. Geneva: The Long Rider’s Guild Press. (Original work published 1910)</para>
   2. Guenon, A. (1899) La Grande Histoire du Mulet.</para>
   3. Hauer, J. (2006). The natural superiority of mules. Guildford, Connecticut: Lyons Press.</para>
   4. Williams, J.O. and Speelman, S.R. (1948). Mule production. Washingon: United States Department of Agriculture.</para>
   5. Milhaud, C. and Coll, J.L. (2004). Utilisation du mulet dans l’Armée Française. Bull. Soc. Fr. Hist. Med. Sci. Vet. 3 (1) : 60-69.</para>
   6. United States Army (2004). Field Manual No 3-05.213 special forces use of pack animals. Washington DC, USA: Headquarters, Department of the Army.</para>
   7. Cousquer, G.O. (2009) Ethical responsibilities to pack animals on expedition: Design and development of a curriculum for the Moroccan Mountain Guide. MSc Dissertation. Edinburgh: University of Edinburgh.</para>
   8. Brager, E. (2005). Techniques du voyage à cheval. Paris: Nathan</para>
   9. Pearson, R.A., Simalenga, E. and Krecek, R. (2003) Harnessing and hitching donkeys, horses and mules for work. Edinburgh: University of Edinburgh.</para>
   10. Hadrill, D. (2002) Horse healthcare. A manual for animal health workers and owners. London: ITDG Publishing.</para>
   11. Geus, V. (2007). Maroc: Treks, randonnés, balades, culture, nature. Grenoble, France: Editions de la Boussole.</para>
   12. Knottenbelt, D.C. (2003) Basic wound management. In: D.C. Knottenbelt (Ed) Handbook of equine wound management. London: Saunders. pp. 39-77.</para>
   13. Gomez, J.H., Hanson, R.R. (2005) Use of bandages in equine wound management. Vet Clin North Am. 21 : 91-104.</para>
   14. Dart, A,J,. Hawkins, N,R,. Dart, C,M,. Jeffcott, L,B, and Canfield, P. (2009) Effect of bandaging on second intention healing of wounds of the distal limb in horses. Aust Vet J. 87 (6) : 215-218.</para>
   15. Wilmink, J.M., Stolk, P.W., Van Weeren, P.R. and Barneveld, A. (1999a) Differences in second-intention wound healing between horses and ponies: macroscopic aspects. Equine Vet. J. 31, 53-60.</para>
   16. Wilmink, J.M., Van Weeren, P.R., Stolk, P.W.., Van Mil, F.N. and Barneveld, A. (1999b) Differences in second-intention wound healing between horses and ponies: histological aspects. Equine Vet. J. 31, 61-67.</para></sect1></article>
   17. Kay, G. (2007) How useful is tetanus antitoxin in the treatment of equidae with tetanus? A comparison of three treatment protocols used in the management of 56 cases of equine tetanus presented to the SPANA clinics in Morocco in 2003/2004. The fifth international colloquium on working equines: The future for working equines. Ed: R.A. Pearson. Sidmouth: Donkey Sanctuary. p. 197.</para>