Nachmias, David. <br/><br/>
Research methods in the social sciences / 
David Nachmias, Chava Nachmias. 
 - 2nd ed. 
 - New York :  St. Martin's Press,  c1981. 
<br/><br/>Includes bibliographies and indexes. 
<br/><br/><label>ISBN: </label>0312676212 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences -- Methodology.--Social sciences -- Methodology.<br/>Social sciences -- Research.--Social sciences -- Research.
<br/><br/><label>LC Class. No.: </label>H 61 NAC 1981