1. Blair, A., Zahm, S.H., 1991. Cancer Among Farmers. Occupational Medicine: State of the Art Reviews, Vol. 6, No., 3. Hanley and Belfus, Inc., Philadelphia, PA.
2. Boone, K., Meisenbach, T., Tucker, M., 2000. Agricultural Communications: Changes and Challenges. Iowa State University Press, Ames, IA, 134 pp.
3. Communicating with farmers about environmental issues;Bruening;J. Appl. Commun.,1991
4. Buttel, F.H., Swanson, L.E., 1986. Soil and water conservation: a farm structural and public policy context. In: Lovejoy, S.B., Napier, T.L. (Eds.), Conserving Soil: Insights from Socioeconomic Research. Soil Conservation Society of America, Ankeny, IA, pp. 26–39.
5. The influence of mass media and interpersonal communication on societal and personal risk judgements;Coleman;Commun. Res.,1993