Citazione Stile APA (7a Edizione)

Ehninger, D. (1982). Principles and types of speech communication (9th ed.). Scott, Foresman and Co.

Citazione stile Chigago Style (17a edizione)

Ehninger, Douglas. Principles and Types of Speech Communication. 9th ed. Glenview, Ill: Scott, Foresman and Co, 1982.

Citatione MLA (9a ed.)

Ehninger, Douglas. Principles and Types of Speech Communication. 9th ed. Scott, Foresman and Co, 1982.