Cooper, Harris <br/><br/>
Research Synthesis and Meta-Analysis: A Step by Step Approach 

 - 4th ed. 
 - Los Angeles:   Sage,  2009. 
 - 269p. 
<br/><br/><label>ISBN: </label>9781412937054 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Methodology
<br/><br/><label>Dewey Class. No.: </label>001.42 COO