Cita APA (7th ed.)

Thomas, D. A., & Fryar, M. (1981). Successful business speaking: A practical guide for the student and professional. National Textbook Company.

Cita Chicago (17th ed.)

Thomas, David Allen, i Maridell Fryar. Successful Business Speaking: A Practical Guide for the Student and Professional. Lincolnwood, Ill: National Textbook Company, 1981.

Cita MLA (9th ed.)

Thomas, David Allen, i Maridell Fryar. Successful Business Speaking: A Practical Guide for the Student and Professional. National Textbook Company, 1981.