Carvalhal, R., Borelli, V. and Miglino, M.A. (2000) “Morfology study of the spermatic cord in Corriedale sheeps (Ovis aries, L. 1758)”, Brazilian Journal of Veterinary Research and Animal Science, 37(5), pp. 348–354. doi:10.1590/S1413-95962000000500002.