APA (7th ed.) Citation

Foss, K. A., & Littlejohn, S. W. (2009). Encyclopedia of communication theory. Sage Publications.

Chicago Style (17th ed.) Citation

Foss, Karen A., and Stephen W. Littlejohn. Encyclopedia of Communication Theory. Los Angeles, Calif: Sage Publications, 2009.

MLA (9th ed.) Citation

Foss, Karen A., and Stephen W. Littlejohn. Encyclopedia of Communication Theory. Sage Publications, 2009.