Research methodology in the life, behavioural and social sciences 
edited by Herman J. Ader and Gideon J. Mellenbergh 
 - London  Sage  1999 
 - 393p. 
<br/><br/><label>ISBN: </label>0761958843 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences --Methodology<br/>Research --Methodology
<br/><br/><label>Dewey Class. No.: </label>I551 Ad35