Crano, William D., 1942- <br/><br/>
Principles and methods of social research 
William D. Crano, Marilynn B. Brewer. 
 - Boston:  Allyn and Bacon Inc.,  1986. 
 - 386 pages :  illustrations ;  24 cm. 
<br/><br/> Includes indexes 
<br/><br/>pages  340-371 
<br/><br/><label>ISBN: </label>0205086322 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research<br/>Social sciences--Methodology