Checkland, Peter <br/><br/>
Soft systems methodology: a 30-year retrospective 
by Peter Checkland 
 - Chichester  John Wiley  2000 
 - 329p. 
<br/><br/><label>ISBN: </label>0471986054 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Systems engineering<br/>System theory
<br/><br/><label>Dewey Class. No.: </label>I571 C414