Martinez del Castillo, G. 2006. Obtencion de semen de rinoceronte blanco (Ceratotherium simum simum) mediante condicionamiento operante. Redvet, Revista Electronica de Veterinaria 7 (8): 1-4, figs. 1-4.
Obtencion de semen de rinoceronte blanco (Ceratotherium simum simum) mediante condicionamiento operante
Rookmaaker, L.C. 2020. Appendix. Publications by Kees Rookmaaker (b.1953 Amsterdam) = Leendert Cornelis Rookmaaker. In: Twenty years of literature on the rhinoceros 2000-2019. RRC. pp. 333-346.
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Rookmaaker, L.C. 2020. Twenty years of literature on the rhinoceros 2000-2019. Extracted from the Rhino Resource Center (RRC). Rhino Resource Center. pp. 1-346 [unpublished].