1. Alarcon, H.B. (1979). Radio for the campesinos. In Rural radio: Programme formats (pp. 59-66). Washington, DC: United Nations Educational, Scientific, and Cultural Organization.
2. Aw, E. (1992). Pluralist responses for Africa. In B. Gerard (Ed.), Radio waves and community (pp. 141-149). New York: Black Rose Books.
3. Baker, J.C. (1981). Farm broadcasting: The first 60 years. Ames, IA: Iowa State University Press.
4. Bandura, A. (1986). Social foundations of thought & action; A social cognitive theory. Englewood Cliffs, NJ: Prentice Hall.
5. Bandura, A.(1991). Self-efficacy mechanism in physiological activation and health-promoting behavior. In J. Madden, IV (Ed.), Neurobiology of learning, emotion and affect (pp. 229-270). New York: Raven.