Luhmann, Niklas. <br/><br/>
Law as a social system / 
Niklas Luhmann; translated by Klaus A. Ziegert. 
 - 1st  ed. 
 - Oxford :  O. U. P.,  2004. 
 - 498  p. 
<br/><br/><label>ISBN: </label>0198262381 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociological jurisprudence.<br/>Social system.