APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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