McMillan , James H. <br/><br/>
Investigación educativa  James H. 
Sally Schumacher. 
 - 5a ed. 
 - Madrid  Pearson, Addison Wesley  2005 
 - 668 p.  ill.  24cm. 
<br/><br/>IIncludes bibliographical references (p. 657-668) and indexes. 
<br/><br/><label>ISBN: </label>842054163X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research<br/>Educational statistics<br/>Education--Research