1. Social wasps;Akre,1982
2. Biology, economic importance, and control of yellowjackets;Akre,1986
3. Biology and distribution of social Hymenoptera;Akre,1984
4. The Yellowjackets of America North of Mexico;Akre,1981
5. Phylogenetic studies of the families of short-tongued bees (Hymenoptera: Apoidea);Alexander;University of Kansas Science Bulletin,1995