Bruening, Thomas H., Rama B. Radhakrishna, and Timothy J. Rollins. “Environmental Issues: Farmers’ Perceptions About Usefulness Of Informational And Orgranizational Sources”. Journal of Agricultural Education 33, no. 2 (June 30, 1992): 34–42. Accessed June 18, 2026. https://jae-online.org/index.php/jae/article/view/899.