Conner, David S., Andrew Nowak, JoAnne Berkenkamp, Gail W. Feenstra, Julia Van Soelen Kim, Toni Liquori, and Michael W. Hamm. “Value Chains for Sustainable Procurement in Large School Districts: Fostering Partnerships”. Journal of Agriculture, Food Systems, and Community Development 1, no. 4 (June 30, 2011): 55–68. Accessed January 29, 2023. https://www.foodsystemsjournal.org/index.php/fsj/article/view/57.