Checkland, Peter. <br/><br/>
Soft systems methodology in action / Peter Checkland, Jim Scholes. 

 - New York : Wiley, 1999.  New York : Wiley, 1999. 
<br/><br/><label>ISBN: </label>0471986054 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System theory    2. System analysis.