Hershberger, S., B. Shaw, S. Moen, T. Johnson, and T. Gorby. “Promoting Small-Scale Maple Syrup Production on Facebook: A Field Experiment Testing Emphasis Message Frames”. Journal of Agriculture, Food Systems, and Community Development, vol. 13, no. 4, Sept. 2024, pp. 199–224, doi:10.5304/jafscd.2024.134.012.