Cohen, Louis, <br/><br/>
Research methods in education / 

 - 7th ed. 
 - London ;  New York :  Routledge,  2011. 
 - xxii, 758 p. :  ill. (chiefly col.) ; 
<br/><br/><label>ISBN: </label>9780415583350 (hard cover) 9780415583367 (soft cover) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>LC Class. No.: </label>MED LB1028  / C572