The Folk-lore Journal. (1886). United Kingdom: Folk-lore Society. P. 32 Folk-lore Society IV
catalogueoflife.org
The Integrated Taxonomic Information System (ITIS)&Species 2000. "Catalogue of Life: 2007 Annual Checklist". The Integrated Taxonomic Information System (ITIS)&Species 2000. Retrieved 2008-06-27.{{cite web}}: CS1 maint: numeric names: authors list (link)
cgiar.org
iwmi.cgiar.org
Jon Davies. "Mongolia"(PDF). International Water Management Institute. Archived from the original(PDF) on 2008-05-28. Retrieved 2008-02-10.