Conflict & International Law. Hotei Publishing. 2005. ISBN 1-57105-341-7. Marshall Cavendish Corporation. Sex and Society. Marshall Cavendish Corporation
Press: 42–76. 1973. ISBN 0-521-29823-7. Law, Robin. The horse in West African history : the role of the horse in the societies of pre-colonial West Africa
Russell CS; Lees; Hooke; Russell. Antithrombotic actions of aspirin in the horse. Equine Vet J. 1991, 23 (2): 123–7. PMID 1904347. doi:10.1111/j.2042-3306