Checkland, Peter. <br/><br/>
Soft systems methodology: a 30-year retrospective.  30-year retrospective. 

 - 1 
 - New York  John Wiley & sons  2003 
 - A1-66,xv,329 
<br/><br/><label>ISBN: </label>471986054 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Software System Analysis&Design
<br/><br/><label>Dewey Class. No.: </label>003.54 CHEP