Shipman,M. <br/><br/>
The limitations of social research, 
Marten,Shipman. 
 - 2nd  
 - London:  Longman,  1981. 
 - xiii,210p.:  ill.;  22 cm 
<br/><br/> Includes bibliography references and index. 
<br/><br/><label>ISBN: </label>0582295262 
<br/><br/><label>LC Class. No.: </label>DUCE H62.S464