Ekeh, Peter P. <br/><br/>
Social exchange theory :the two tradition 

 - London  Heinemann  1974 
 - xv, 237 p.   ill.; index 
<br/><br/><label>ISBN: </label>0435822756 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociology<br/>Social psychology
<br/><br/><label>LC Class. No.: </label>MED HM24  / E37