• [Wiki] http://en.wikipedia.org/wiki/Hippotragus_niger.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Hippotragus_niger.
• [Grob1980] Grobler, J. H. (1980). Body growth and age determination of the sable Hippotragus niger niger (Harris, 1838). Koedoe, 23:131--156.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.