Wilson, B. (2001). Soft systems methodology: Conceptual model building and its contribution. John Wiley and Sons.
Citazione stile Chigago Style (17a edizione)Wilson, Brian. Soft Systems Methodology: Conceptual Model Building and Its Contribution. Chichester: John Wiley and Sons, 2001.
Citatione MLA (9a ed.)Wilson, Brian. Soft Systems Methodology: Conceptual Model Building and Its Contribution. John Wiley and Sons, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.