^International Commission on Zoological Nomenclature (2003). Opinion 2027 (Case 3010). "Usage of 17 specific names based on wild species which are pre-dated by or contemporary with those based on domestic animals (Lepidoptera, Osteichthyes, Mammalia): conserved." Bulletin of Zoologic Nomenclature, 60:81-84.
^ 3.03.1Tarpan. Breeds of Livestock. Oklahoma State University. [2008-10-07].