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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)
♦ 2Comparative Diets of Burrowing Owls in Oregon and Washington, Gregory A. Green, Richard E. Fitzner, Robert G. Anthony and Lee E. Rogers, Northwest Science, Vol. 67, No. 2, 1993, pp. 88-93
♦ 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.