Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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