Meadows, D. H., & Wright, D. (2008). Thinking in systems: A primer. Chelsea Green Pub..
Lua i Stíl Chicago (17ú heag.)Meadows, Donella H., agus Diana Wright. Thinking in Systems: A Primer. White River Junction, Vt.: Chelsea Green Pub., 2008.
Lua MLA (8ú heag.)Meadows, Donella H., agus Diana Wright. Thinking in Systems: A Primer. Chelsea Green Pub., 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.