BioStor
 | The comparative morphology of the order Strepsiptera together with records and descriptions of insects W Dwight Pierce (1918) Proceedings of the United States National Museum 54(2242): 391-501 |
 | Classification of Insects. A key to the known families of insects and other terrestrial arthropods. [1st Edition] C T Brues and A L Melander (1932) Bulletin of the Museum of Comparative Zoology 73: 1-672 |