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♦ 1The Food-habits and Biology of Acrididae in an Old-field Community in Southeastern Michigan, S. K. Gangwere, F. C. Evans, and M. L. Nelson, The Great Lakes Entomologist, Vol. 9, No. 2 (1976)
♦ 2Resources of a Snake Community in Prairie-Woodland Habitat of Northeastern Kansas, Henry S. Fitch, U.S Fish and Wildlife Service, Wildlife Research Report 13: 83-98 (1982)
♦ 3Predator-Prey Database for the family Asilidae (Hexapoda: Diptera) Prepared by Dr. Robert Lavigne, Professor Emeritus, University of Wyoming, USA and Dr. Jason Londt (Natal Museum, Pietermaritzburg)
♦ 4Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.