Leedy, Paul D. <br/><br/>
Practical Research Planning and Design 

 - 2nd Ed 
 - Macmillan, New york  1980 
 - vii, 270 
<br/><br/><label>ISBN: </label>0-02-369230-8 
<br/><br/><label>Dewey Class. No.: </label>370.78 Lee