GILLESPIE, G. W. Thoughts on John Ikerd’s The Essentials of Economic Sustainability. Journal of Agriculture, Food Systems, and Community Development, Ithaca, NY, USA, v. 3, n. 1, p. 269–274, 2012. DOI: 10.5304/jafscd.2012.031.019. Disponível em: https://www.foodsystemsjournal.org/index.php/fsj/article/view/215. Acesso em: 8 aug. 2022.