1. Asher, H. B. 1983. Causal Modeling. Second edition. Beverly Hills: Sage Publications, Inc.
2. Augusta, A., and Z. Burian. 1962. A Book of Mammoths. London: Paul Hamlyn.
3. Behrensmeyer. A. K., K. D. Gordon, and G. T. Yanagi. 1986. Trampling as a cause of bone surface damage and pseudo-cutmarks. Nature 319:768–771.
4. Binford, L. R. 1981. Bones: Ancient Men and Modern Myths. San Francisco: Academic Press.
5. Binford, L. R. 1984. Faunal Remains from Klasies River Mouth. San Francisco: Academic Press.