Educational research : An integrative introduction 
Sowell, Evelyn J. 
 -  McGraw-Hill Higher Education.  2001 
 - xiv, 370 pages. 
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<br/><br/><label>ISBN: </label>0-07-059817-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education -- Research -- Methodology.
<br/><br/><label>Dewey Class. No.: </label>370.72 So9e 2001