^Grimaldi, D.; Engel, M.S. 2005: Evolution of the insects. Cambridge University Press, New York, USA. limited preview on Google books
^Yoshizawa, K.; Saigusa, T. 2001: Phylogenetic analysis of paraneopteran orders (Insecta: Neoptera) based on forewing base structure, with comments on monophyly of Auchenorrhyncha (Hemiptera). Systematic entomology, 26: 1–13.