Bovee, C. L., & Thill, J. V. (1995). Business communication today (4th ed.). McGraw-hill.

Bovee, Courtland L., and John V. Thill. Business Communication Today. 4th ed. New York: McGraw-hill, 1995.

Bovee, Courtland L., and John V. Thill. Business Communication Today. 4th ed. McGraw-hill, 1995.