Wilson, Brian. <br/><br/>
Soft systems methodology :  conceptual model building and its contribution / 
Brian Wilson. 
 - Chichester :  John Wiley & Sons,  2001. 
 - xvii, 260 pages.  illustration  26 cm 
<br/><br/> Includes index   Includes appendices 
<br/><br/>Includes bibliography references and index 
<br/><br/><label>ISBN: </label>9780471894896 0471894893 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System analysis.<br/>Linguistic models.<br/>Problem solving.<br/>System theory.