Du Plooy G. M. <br/><br/>
Communication research:  techniques, methods and applications / 
G.M. Du Plooy. 
 - 2nd ed. 
 - Cape Town :  Juta & Co, Ltd.,  2009. 
 - 460p :  ill. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0702177101 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication--Research.
<br/><br/><label>LC Class. No.: </label>P91.3  / .D87