Chester Stock and E. L. Furlong (1928). „The Pleistocene elephants of Santa Rosa Island, California”. Science68 (1754), 140–141. o. DOI:10.1126/science.68.1754.140. PMID17772244.
Chester Stock and E. L. Furlong (1928). „The Pleistocene elephants of Santa Rosa Island, California”. Science68 (1754), 140–141. o. DOI:10.1126/science.68.1754.140. PMID17772244.