DENNING, B. P.; GRAFF, S.; WOOTEN, H. Laws to Require Purchase of Locally Grown Food and Constitutional Limits on State and Local Government: Suggestions for Policymakers and Advocates. Journal of Agriculture, Food Systems, and Community Development, Ithaca, NY, USA, v. 1, n. 1, p. 139–148, 2010. DOI: 10.5304/jafscd.2010.011.014. Disponível em: https://foodsystemsjournal.org/index.php/fsj/article/view/15. Acesso em: 6 jul. 2022.