Bettinghaus, Erwin Paul,  1930- <br/><br/>
Message preparation;  the nature of proof 
[by] Erwin P. Bettinghaus. 
 - 1st ed 
 - Indianapolis,  Bobbs-Merrill  [1966] 
 - viii, 127 p.  illus.  21 cm. 
 - The Bobbs-Merrill series in speech communication, 1 .
<br/><br/>Bibliography: p. 121-122. 
<br/><br/><label>ISBN: </label>Null 
<br/><br/><label>LCCN: </label>66017583  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public speaking.<br/>Belief and doubt.
<br/><br/><label>LC Class. No.: </label>PN4121  / .B448 
<br/><br/><label>Dewey Class. No.: </label>840