Cohen, Louis <br/><br/>
Research methods in education / 
Louis Cohen, Lawrence Manion, and Keith Morrison ; with contributions from Richard Bell ... [et al.] 
 - 7th ed. 
 - Abingdon, OX :  Routledge,  2011 
 - xxii, 758 p. :  ill. (chiefly col.) ;  25 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780415583367 (pbk.) 9780415583350 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research--Great Britain