Cita APA (7th ed.)

Anderson, V., & Johnson, L. (1997). Systems thinking basics: From concepts to causal loops. Pegasus Communications.

Cita Chicago (17th ed.)

Anderson, Virginia, i Lauren Johnson. Systems Thinking Basics: From Concepts to Causal Loops. Waltham: Pegasus Communications, 1997.

Cita MLA (9th ed.)

Anderson, Virginia, i Lauren Johnson. Systems Thinking Basics: From Concepts to Causal Loops. Pegasus Communications, 1997.