APA (7th ed.) Citation

Cragan, J. F., & Shields, D. C. (1998). Understanding communication theory: The communicative forces for human action. Allyn and Bacon.

Chicago Style (17th ed.) Citation

Cragan, John F., and Donald C. Shields. Understanding Communication Theory: The Communicative Forces for Human Action. Boston, Mass: Allyn and Bacon, 1998.

MLA (9th ed.) Citation

Cragan, John F., and Donald C. Shields. Understanding Communication Theory: The Communicative Forces for Human Action. Allyn and Bacon, 1998.