A Dragonfly GraphQL API build on NodeJS and Apollo 4
- Atlas of the European Dragonflies and Damselflies, Jean-Pierre Boudot(Editor), Vincent J Kalkman(Editor), Fons Peels(Illustrator)
- Dragonflies and Damselflies of Europe: A scientific approach to the identification of European Odonata without capture, Galliani, C.; Scherini, R.; Piglia, A.
- Field guide to the dragonflies of Britain and Europe, Klaas-Douwe B Dijkstra.
- Nordens trollsländor, M. Billqvist, D. Andersson, C. Bergendorff