Christensen, Libby, Becca B. R. Jablonski, Lacy Stephens, and Anupama Joshi. “Evaluating the Economic Impacts of Farm-to-School Procurement: An Approach for Primary and Secondary Financial Data Collection of Producers Selling to Schools”. Journal of Agriculture, Food Systems, and Community Development 8, no. C (December 20, 2018): 73-94. Accessed May 30, 2020. https://www.foodsystemsjournal.org/index.php/fsj/article/view/656.