Russo, Heide and Holland:32 -Sassaman, Kenneth E. (2010). "Structure and Practice in the Archaic Southeast". In Robert W. Preucel and Stephen A. Mrozowski (ed.). Contemporary Archaeology in Theory: the New Pragmatism. Blackwell Publishing. p. 180. ISBN978-1-4051-5832-9. Retrieved 20 November 2011. -Habu:73, 191, 193 -Oikawa and Koyama:190 -Hemmings:7-8 -Schwadron:3
Russo 2006:17, 23, 24 Russo, Michael (2004). "Notes on South Carolina and Florida Shell Rings"(Word document). U.S. National Park Service. Retrieved 20 November 2011. (Note: Clicking on Notes on South Carolina and Florida Shell Rings on this page downloads a .doc file.)