Checkland, Peter. <br/><br/>
Systems thinking, systems practice / 
Peter Checkland. 
 - Chichester :  J. Wiley,  c1981. 
 - xiv, 330 p. ;  24 cm. 
<br/><br/> Includes indexes. 
<br/><br/>Includes bibliographical references: p. 299-311. 
<br/><br/><label>ISBN: </label>0471279110 (cased) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System theory.