Omobowale, T. O., J. O. Olopade, I. L. Usende, and I. A. Azeez. “A Case of Polydactyly in the Hind-Limbs of a West African Dwarf Goat in South-West Nigeria”. Italian Journal of Anatomy and Embryology, vol. 118, no. 3, Dec. 2013, pp. 298-02, https://oajournals.fupress.net/index.php/ijae/article/view/1186.