Dyfyniad APA

JEFFREY, R. C., & PETERSON, O. (1980). Speech: Atext with adapted readings.-- ed.3. Harper and Row.

Dyfyniad Arddull Chicago

JEFFREY, Robert C., and Owen PETERSON. Speech: Atext with Adapted Readings.-- Ed.3. New York: Harper and Row, 1980.

Dyfyniad MLA

JEFFREY, Robert C., and Owen PETERSON. Speech: Atext with Adapted Readings.-- Ed.3. Harper and Row, 1980.

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