↑Bisby F. A., Roskov Y. R., Orrell T. M., Nicolson D., Paglinawan L. E., Bailly N., Kirk P. M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist.". Species 2000: Reading, UK. Retrieved 24 september 2012.