Sager, A. W. (1968). Speak your way to success: A guide to effective speaking in business and the professions. McGraw-Hill.
Dyfyniad Arddull ChicagoSager, Arthur W. Speak Your Way to Success: A Guide to Effective Speaking in Business and the Professions. New York: McGraw-Hill, 1968.
Dyfyniad MLASager, Arthur W. Speak Your Way to Success: A Guide to Effective Speaking in Business and the Professions. McGraw-Hill, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.