(en) Freitag, S. & T. J. Robinson (1993). Phylogeographic patterns in mitochondrial DNA of the Ostrich (Struthio camelus). The Auk110(3): 614–622, DOI:10.2307/4088425 (full text)
(en) Freitag, S. & T. J. Robinson (1993). Phylogeographic patterns in mitochondrial DNA of the Ostrich (Struthio camelus). The Auk110(3): 614–622, DOI:10.2307/4088425 (full text)