http://www.arl.org/sparc/partnering/bibliography/nonprofit_market.shtml
Non-profit market participation
Brown, Eleanor, and Al Slivinski. “Nonprofit Organizations and the Market.” In The Nonprofit Sector: A Research Handbook, Second Edition, edited by Walter W. Powell and Richard Steinberg. New Haven: Yale University Press, 2006.
Clark, Catherine, William Rosenzweig, David Long, and Sara Olsen. Double Bottom Line Project Report: Assessing Social Impact in Double Bottom Line Ventures. (New York: The Rockefeller Foundation), 2004.
Emerson, Jed, and Sheila Bonini. The Blended Value Map: Tracking the Intersects and Opportunities of Economic, Social and Environmental Value Creation, 2003. [PDF]
Foster, William, and Jeffrey Bradach. “Should Nonprofits Seek Profits.” Harvard Business Review (February 2005): 1-8.
Oster, Sharon M., Cynthia W. Massarsky, and Samantha L. Beinhacker, eds. Generating and Sustaining Nonprofit Earned Income. San Francisco: Jossey-Bass, 2004.