Sedlack, Richard Guy. <br/><br/>
Social Research : Theory and Methods / 
R. Guy Sedlack 
 - Boston :  Allyn and Bacon,  1992 
 - 468 p. 
<br/><br/><label>ISBN: </label>0205131875 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology.<br/>Sociology--Research--Methodology.
<br/><br/><label>LC Class. No.: </label>H62  / S412