APA (7th ed.) Citation

Checkland, P., & Scholes, J. (1991). Soft systems methodology in action (Repr.). Wiley.

Chicago Style (17th ed.) Citation

Checkland, Peter, and Jim Scholes. Soft Systems Methodology in Action. Repr. Chichester u.a: Wiley, 1991.

MLA (9th ed.) Citation

Checkland, Peter, and Jim Scholes. Soft Systems Methodology in Action. Repr. Wiley, 1991.