Leedy, Paul D. <br/><br/>
Practical research  planning and design (Fourth edition) 
Paul D. Leedy 
 - Fourth edition 
 - xi, 318 pages  28 cm 
<br/><br/><label>ISBN: </label>0023692413 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Methodology