References
Kull, Kalevi, TerrenceDeacon, ClausEmmeche, JesperHoffmeyer, and FrederikStjernfeldt. 2009. “Theses on Biosemiotics: The Saka Convention.”Biological Theory 4 (2): 1–7.
NAS.2008. Science, Evolution, and Creationism. Washington , D.C. : National Academy of Sciences and Institute of Medicine.