Leedy, Paul D. <br/><br/>
Practical research/  planning and design. 
by Paul D. Leedy 
 - 5th ed. 
 - New York:  Macmillan publishing company,  1993 
 - xiv, 348 p.  ill. 
<br/><br/> includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>0-02-369242-1 
<br/><br/><label>Subjects--Personal Names: </label>