Template:Hinojosa-Díaz & Engel, 2011a
- Hinojosa-Díaz, I.A. & Engel, M.S. 2011: Euglossa williamsi, a new species of orchid bee from the Amazon Basin of Ecuador and Peru, with notes on its taxonomic association and biogeography (Hymenoptera, Apidae). ZooKeys 159: 49-63. DOI: 10.3897/zookeys.159.2239 .
- ZooBank: 5116F2FD-B3D0-4CC3-93F4-FEFEA087CC18