1. Bodie, G. D., & Fitch-Hauser, M. (2010). Quantitative research in listening: Explication and overview. In A. D. Wolvin (Ed.), Listening and human communication in the 21st century (pp. 46-93). Chichester, UK: Blackwell.
2. Purdy, M. (1997). What is listening? M. Purdy & D. Borisoff (Eds.), Listening in everyday life: A personal and professional approach (2nd ed.) (pp. 1-12). Lanham, MD: University Press of America.