Sandford, William Phillips <br/><br/>
Principles of effective speaking / 
William Phillips Sandford, Willard Hayes Yeager. 
 - 6th ed. 
 - New York :  Ronald Press Company,  1963. 
 - vi, 344 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oral communication--Study and teaching