Louis Cohen, ; Manion, Lawrence & Morrison, Keith <br/><br/>
Research methods in education 

 - 5th ed 
 - Routledge Falmer, London  2000 
 - xvi,446 
<br/><br/><label>ISBN: </label>0-415-19541-1 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>370.78 Coh