@book{21144,
	author = {Moure, Jesus S. and Hurd, Paul David},
	title = {An annotated catalog of the halictid bees of the Western Hemisphere (Hymenoptera, Halictidae)},
	publisher = {Smithsonian Institution Press},
	year = {1987.},
	address = {Washington, D.C.},
	note = {Includes index.}
}