HERSHBERGER, S.; SHAW, B.; MOEN, S.; JOHNSON, T.; GORBY, T. Promoting small-scale maple syrup production on Facebook: A field experiment testing emphasis message frames. Journal of Agriculture, Food Systems, and Community Development, Ithaca, NY, USA, v. 13, n. 4, p. 199–224, 2024. DOI: 10.5304/jafscd.2024.134.012. Disponível em: https://foodsystemsjournal.org/index.php/fsj/article/view/1287. Acesso em: 12 feb. 2025.