- ↑ Hagen, H. A. (1889) Synopsis of the Odonata of North America. No 1. [Possibly published January 1890 !], Psyche 5: 241-250.
- ↑ 2.0 2.1 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. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ Odonata: Catalogue of the Odonata of the World. Tol J. van , 1 Agosto 2008