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Cited: "Becoming a Vegetarian." Harvard Health Publications. Harvard Medical School, 1 Oct. 2009. Web "Being a Vegetarian." Brown University Health Education. Brown University, 12 Nov. 2011. Web Lappé, Frances Moore. Diet for a Small Planet. 10th anniversary ed. New York: Ballantine Books, 1982. "Vegetarian 101." PETA.org. People for the Ethical Treatment of Animals, 19 Feb. 2012. Web. 7 May 2013. “Position of the American Dietetic Association: Vegetarian Diets." Journal of the American Dietetic Association 109.7 (2009): 1266-283 Regan, Tom. The Case for Animal Rights. Berkeley: University of California Press, 1983. Rifkin, Jeremy. Beyond Beef. New York: Dutton, 1992. Robbins, John. Diet for a New America. Walpole, N.H.: Stillpoint, 1987. Singer, Peter. Animal Liberation. New York: Ecco, 2002. Agriculture Organization of the United Nations, 2006. "Vegetarian 101." PETA.org. People for the Ethical Treatment of Animals, 19 Feb. 2012. Web. 7 May 2013.