1. Abel, G. J., Brottrager, M., Cuaresma, J. C., & Muttarak, R. (2019). Climate, conflict and forced migration. Global Environmental Change, 54, 239–249.
2. Aharon, P., Aldridge, D., & Hellstrom, J. (2012). Rainfall variability and the rise and collapse of the Mississippian chiefdoms: Evidence from a DeSoto caverns stalagmite. Climates, Landscapes, and Civilizations, 198, 35–42.
3. Center for Archaeological Investigations, occasional paper 33;SM Alt,2006
4. Anderson, D. G. (1994). The Savannah River chiefdoms: Political change in the late prehistoric southeast. University of Alabama Press.
5. Anderson, D. G. (1996). Chiefly cycling and large-scale abandonments as viewed from the Savannah River basin. In J. F. Scarry (Ed.), Political structure and change in the prehistoric southeastern United States (pp. 150–191). University of Florida Press.