Some sources to start things off:
John, Grant. The Green Marketing Manifesto. Chichester, England; Hoboken, NJ: John Wiley & Sons, 2007.
Johnston, Josee. “The Citizen-Consumer Hybrid: Ideological tensions and the case of Whole Foods Market.” Theory and Society 37.3 (2008): 229-270.
Stolle, Dietlind, and Michele Micheletti. “The Gender Gap Reversed: Political consumerism as a women-friendly form of civic and political engagement.” Gender and Social Capital Conference, St. John’s College, Manitoba. 2-3 May 2003. <http://www.umanitoba.ca/outreach/conferences/gender_socialcapital/StolleMichelettipaper.pdf>
Micheletti, Michele, and Dietlind Stolle. “Mobilizing Consumers to Take Responsibility for Global Social Justice.” The ANNALS of the American Academy of Political and Social Science 611.1 (2007): 157-175.
Micheletti, Michele. Political Virtue and Shopping: Individuals, consumerism, and collective action. New York: Palgrave Macmillan, 2003.
Nelson, Michelle R., Mark A. Rademacher, and Hye-Jin Paek. “Downshifting Consumer = Upshifting Citizen? An Examination of a Local Freecycle Economy.” The ANNALS of the American Academy of Political and Social Science 611.1 (2007): 141-156.
Prothero, Andrea, and James A. Fitchett. “Greening Capitalism: Opportunities for a Green Commodity.” Journal of Macromarketing 20.1 (2000): 46-55.
Szasz, Andrew. Shopping Our Way to Safety: How we changed from protecting the environment to protecting ourselves. Minneapolis: University of Minnesota Press, 2007.
And, yeah, there was absolutely no reason for me to abbreviate “preliminary” in my title, other than the fact that I like to stand out.