The definition of communication is at best undecided. Berlo’s attempt (1960) is shown as a conceptual model below furthering the basic model of Shannon & Weaver (1949).
Literature, see also below:
Berlo, D.K. (1960). The process of communication. An introduction to theory and practice. New York: Holt, Rheinhart and Winston
Shannon, C. & Weaver, W. (1949). The mathematical theory of communication. Illinois: University of Illinois Press Inc.