Conner, D. S., Nowak, A., Berkenkamp, J., Feenstra, G. W., Van Soelen Kim, J., Liquori, T. and Hamm, M. W. (2011) “Value Chains for Sustainable Procurement in Large School Districts: Fostering Partnerships”, Journal of Agriculture, Food Systems, and Community Development. Ithaca, NY, USA, 1(4), pp. 55–68. doi: 10.5304/jafscd.2011.014.005.