Leedy, Paul D., <br/><br/>
Practical research :  planning and design / 
Paul D. Leedy, Late of American University and Jeanne Ellis Ormrod, University of Northern Colorado (Emerita) ; with Laura Ruth Johnson, Northern Illinois University. 
 - Twelfth edition. 
 - xx, 441 pages :  color illustrations ;  27 cm 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9789353439682 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Methodology.
<br/><br/><label>Dewey Class. No.: </label>001.4  / PAU