Arendt, H. (1978). The life of the mind. New York : Harcourt, Brace.
2.
Fowler, D.B. (2002). Winter wheat production manual. Saskatoon, Canada: University of Saskatchewan, Crop Development Centre. Retrieved May 15, 2007, from http://www.usask.ca/agriculture/plantsci/winter_cereals/Winter_wheat/chapt25/cvchpt25.php
3.
Hyde, C.R. (2000). Pay it forward. New York: Simon & Schuster.
4.
Komter, A. (2007). Gifts and social relations: The mechanisms of reciprocity. International Sociology, 22, 93-107.
5.
Mauss, M. (1990). The gift: Forms and functions of exchange in archaic societies. London: Routledge. (Original work published 1925)
6.
Peel, M.D., & Riveland, N. (1997, September). Winter wheat production in North Dakota . Extension Bulletin, 33. Retrieved May 15, 2007, from http://www.ag.ndsu.edu/pubs/plantsci/smgrains/ed33w.htm
7.
Schaefer, C. (2006). Grandmothers counsel the world: Women elders offer their vision for our planet. Boston: Trumpeter.
8.
Stanton, E.C. (1922). My diary (Vol. 2). Retrieved May 1, 2007, from http://pds.lib.harvard.edu/pds/view/2579101?n=705
9.
Valun, S. (2005, February-March). The taste of Maine in grain. Mother Earth News, 208. Retrieved May 15, 2007, from http://www.motherearthnews.com/print-article.aspx?id=111702
