Gwyn, Jack. <br/><br/>
The business of oral communication :  fundamentals / 
Jack Gwyn, Robert J. Gwyn. 
 - 2nd ed 
 - Cincinnati, OH :  South-Western,  c1989 
 - iv, 124 p. :  ill. ;  28 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business communication--Study and teaching.<br/>Business education.
<br/><br/><label>Subjects--Index Terms: </label>Giao tiếp kinh doanh Truyền thông 
<br/><br/><label>Dewey Class. No.: </label>651.7  / GWY 1989