Cohen, Louis. , <br/><br/>
Research methods in education / 
Louis Cohen, Lawrence Manion and Keith Morrison. 
 - 6th ed. 
 - xviii, 638 pages :  illustrations ;  26 cm. 
<br/><br/><label>ISBN: </label>0415374103 9780415374101 0415368782 978041536878 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education --Research.<br/>Education --Research--Great Britain.
<br/><br/><label>LC Class. No.: </label>LB1028   / .C63 2007