Trochim, William M., <br/><br/>
Research methods :  the essential knowledge base / 
William M. Trochim, James P. Donnelly, Kanika Arora 
 - Student Edition 
 - xxii, 422 pages :  illustrations (some color) ;  25 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781133954774 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Methodology