(1993). Hymenoptera of the world: An identification guide to families. Research Branch, Agriculture Canada.
Chicago Style (17th ed.) CitationHymenoptera of the World: An Identification Guide to Families. Ottawa, Ontario: Research Branch, Agriculture Canada, 1993.
MLA (9th ed.) CitationHymenoptera of the World: An Identification Guide to Families. Research Branch, Agriculture Canada, 1993.
Warning: These citations may not always be 100% accurate.