APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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