Dyfyniad APA

Gronbeck, B. E. (1990). Principles and types of speech communication (11th ed.). Scott, Foresman/Little, Brown Higher Education.

Dyfyniad Arddull Chicago

Gronbeck, Bruce E. Principles and Types of Speech Communication. 11th ed. Glenview, Ill: Scott, Foresman/Little, Brown Higher Education, 1990.

Dyfyniad MLA

Gronbeck, Bruce E. Principles and Types of Speech Communication. 11th ed. Scott, Foresman/Little, Brown Higher Education, 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.