Nachmias, David. <br/><br/>
Research methods in the social sciences / 
David Nachmias and Chava Nachmias. 
 - 3rd. 
 - New York :  St Martins Press,  1987. 
 - xvii, 589p. :  ill. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0312676271 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research.<br/>Social sciences--Research.