- ↑ Szeptycki, Andrzej (2007) Catalogue of the World Protura, Acta Zoologica Cracoviensia, Ser. B - Invertebrata, vol. 50B, no. 1
- ↑ Szeptycki, Andrzej (1993) Gracilentulus species of "gracilis" group (Protura, Berberentomidae), Acta Zoologica Cracoviensia, vol. 35, no. 3
- ↑ 3.0 3.1 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)
- ↑ ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 26 Abril 2011