BioStor
 | Bees in the collection of the United States National Museum T D.a. Cockerell (1919) Proceedings of the United States National Museum 55: 167-221 |
 | A Survey of the Reproductive Biology of the Myrtoideae (Myrtaceae) E Nic Lughadha and C Proenca (1996) Annals of the Missouri Botanical Garden 83: 480-503 |