Holland, J. H. (2018). Complexity: A Very Short Introduction. Oxford University Press.
Čikaški stil citiranja (17. izdanje)Holland, John H. Complexity: A Very Short Introduction. Oxford University Press, 2018.
MLA način citiranja (9. izdanje)Holland, John H. Complexity: A Very Short Introduction. Oxford University Press, 2018.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.