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- Richard Pankhurst, The Ethiopian Borderlands (Lawrenceville: Red Sea Press, 1997), p. 61
- As related in his memoirs, Hell-Hole of Creation: The Exploration of Abyssinian Danakil (New York: Alfred A. Knopf, 1935)
- Moehlman, P.D., Yohannes, H., Teclai, R. & Kebede, F. 2008. Equus africanus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.1. <www.iucnredlist.org>. Downloaded on 28 September 2011.