Thill, J. V., & Bovée, C. L. (2002). Excellence in business communication (5th ed.). Prentice Hall.

Thill, John V., and Courtland L. Bovée. Excellence in Business Communication. 5th ed. Upper Saddle River, N.J.: Prentice Hall, 2002.

Thill, John V., and Courtland L. Bovée. Excellence in Business Communication. 5th ed. Prentice Hall, 2002.