Crisell, A. (2009). Understanding radio (2nd ed.) (Esam, M., Trans.). Tehran: Tarhe Ayandeh Pub. (Original work published 1960).
Wimmer, R. D. & Dominick, J. R. (2006). Mass media research: An Introduction (Seyyed Emami K. Trans.). Tehran: Soroush Pub. (Original work published 1979).
Yin, R. K. (2003). Case study research: design and methods (Parsaeian, A. & Aarabi, S. M.). 2nd ed. Tehran: Cultural Researches Office. (Original work published 1984).