Rookmaaker, K., and P.-O. Antoine. “New Maps Representing the Historical and Recent Distribution of the African Species of Rhinoceros: Diceros Bicornis, Ceratotherium Simum and Ceratotherium Cottoni”. Pachyderm, vol. 52, Dec. 2012, pp. 91-96, doi:10.69649/pachyderm.v52i.311.