Cita APA (7a ed.)

Hancock, J. C. (1961). An introduction to the principles of communication theory. McGraw-Hill.

Cita Chicago Style (17a ed.)

Hancock, John C. An Introduction to the Principles of Communication Theory. New York [etc.]: McGraw-Hill, 1961.

Cita MLA (9a ed.)

Hancock, John C. An Introduction to the Principles of Communication Theory. McGraw-Hill, 1961.