1. Mc Kinnon AO, Voss JL. Urospermia. In: Equine Reproduction. 2nd ed. 1993. p. 868-869.
2. Blanchard TL, Varner DD, Bretzlaff KN, et al. Male reproductive disorders. In: Smith BP, editor. 2nd ed. Large Animal Internal Medicine, Mosby-Year Book. Inc St Louis: Missouri; 1996. p. 1566-1583.
3. Ejacution: Physiology and dysfuntion;Mc Donnell;Vet Clin North Am Equine Pract,1992
4. Nash JG, Voss JL, Squires EL. Urination during ejaculation in a stallion. J Am Vet med Ass. 1980;176(3):224-227.
5. Lowe JN. Diagnosis and management of urospermia in a comercial Thoroughbred stallion Equine vet. Educ. 2001;13(1):4-7.