Anderson, V., & Johnson, L. (1997). Systems thinking basics: From concepts to causal loops. Pegasus Communications.
Citace podle Chicago (17th ed.)Anderson, Virginia, a Lauren Johnson. Systems Thinking Basics: From Concepts to Causal Loops. Waltham: Pegasus Communications, 1997.
Citace podle MLA (9th ed.)Anderson, Virginia, a Lauren Johnson. Systems Thinking Basics: From Concepts to Causal Loops. Pegasus Communications, 1997.
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