Leedy, Paul D. <br/><br/>
Practical research :  Planning and design / 
Paul D Leedy. 
 - Fifth edition. 
 - xiv, 348 pages ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0023692421 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Methodology.