Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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