(2012. november 4.) „Pliocene Bovidae (Mammalia) from the Hadar Formation of Hadar and Ledi-Geraru, Lower Awash, Ethiopia”. Journal of Vertebrate Paleontology32 (1), 180–97. o. DOI:10.1080/02724634.2012.632046.
Denis Geraads, René Bobe & Kaye Reed (2012). „Pliocene Bovidae (Mammalia) from the Hadar Formation of Hadar and Ledi-Geraru, Lower Awash, Ethiopia”. Journal of Vertebrate Paleontology32 (1), 180–197. o. DOI:10.1080/02724634.2012.632046.
Evolutionary pattern and process in the sister-group Alcelaphini-Aepycerotini (Mammalia: Bovidae), Living Fossils. New York, USA: Springer (1984. november 4.). ISBN 978-1-4613-8271-3. OCLC10403493