Cita APA (7a ed.)

Ehninger, D. (1978). Principles and types of speech communication (8th ed.). Schott foresman.

Cita Chicago Style (17a ed.)

Ehninger, Douglas. Principles and Types of Speech Communication. 8th ed. London: Schott foresman, 1978.

Cita MLA (9a ed.)

Ehninger, Douglas. Principles and Types of Speech Communication. 8th ed. Schott foresman, 1978.