Beebe, S. A., & Beebe, S. J. Public speaking: An audience centered approach. Englewood Cliffs: Prentice Hall.

Beebe, Steven A., و Susan J. Beebe. Public Speaking: An Audience Centered Approach. Englewood Cliffs: Prentice Hall.

Beebe, Steven A., و Susan J. Beebe. Public Speaking: An Audience Centered Approach. Englewood Cliffs: Prentice Hall.