Wilson, B. (2001). Soft systems methodology: Conceptual model building and its contribution. John Wiley and Sons.
Chicago-Zitierstil (17. Ausg.)Wilson, Brian. Soft Systems Methodology: Conceptual Model Building and Its Contribution. Chichester: John Wiley and Sons, 2001.
MLA-Zitierstil (9. Ausg.)Wilson, Brian. Soft Systems Methodology: Conceptual Model Building and Its Contribution. John Wiley and Sons, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.