Practical research :   Planning and design / 
Leedy, Paul 
 - 8th ed.  
 - New Jersey:  Pearson Education,  2005. 
 - xxii, 319p. : 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780131108950 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research methodology
<br/><br/><label>LC Class. No.: </label>Q180.55  / .M4L43 2005