Moehlman, P.D., Yohannes, H., Teclai, R. & Kebede, F. (2008). Equus africanus. Senarai Merah Spesies Terancam IUCN 2008. IUCN 2008. Dicapai pada 10 April 2009. Database entry includes a brief justification of why this species is of critically endangered.