Leedy, Paul D. , <br/><br/>
Practical research :  planning and design / 
Paul D. Leedy. 
 - 5th ed. 
<br/><br/><label>ISBN: </label>0023692421 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research --Methodology.
<br/><br/><label>LC Class. No.: </label>Q180.55 .M4   / .L43 1989