Dyfyniad APA

Frank, T., & Ray, D. (1979). Basic business and professional speech communication. Prentice-Hall.

Dyfyniad Arddull Chicago

Frank, Ted, and David Ray. Basic Business and Professional Speech Communication. Englewood Cliffs, NJ: Prentice-Hall, 1979.

Dyfyniad MLA

Frank, Ted, and David Ray. Basic Business and Professional Speech Communication. Prentice-Hall, 1979.

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