Research and evaluation methods in special education / 
Mertens, Donna M. ; Mclaughlin, John A. 
 - California :  Corwin, Sage Publishing Company,  2004. 
 - xiv, 275 p.: 25.4cm. 
<br/><br/>Includes references, index 
<br/><br/><label>ISBN: </label>0761946535 
<br/><br/><label>Dewey Class. No.: </label>C  371.907 MER 2004