Cita APA (7th ed.)

Wilson, B. (2001). Soft systems methodology: Conceptual model building and its contribution. John Wiley and Sons.

Cita Chicago (17th ed.)

Wilson, Brian. Soft Systems Methodology: Conceptual Model Building and Its Contribution. Chichester: John Wiley and Sons, 2001.

Cita MLA (9th ed.)

Wilson, Brian. Soft Systems Methodology: Conceptual Model Building and Its Contribution. John Wiley and Sons, 2001.