1. Agamben, G. (1998). Homo Sacer: Sovereign Power and Bare Life. Stanford University Press.
2. Agamben, G. (2005). State of Exception. The University of Chicago Press.
3. Amazon News. (2002, July 18). Rosewood, a Sweet Aroma that Could Fade Away.
4. Arrow, K. J. (1972). Gifts and Exchanges. Philosophy and Public Affairs, 1(4), 343–362.
5. Arrow, K. J. (1997, June). Invaluable Goods. Journal of Economic Literature, XXXV(2), 757–765.