Fisher, A. (2011). Critical thinking: An introduction (Second edition.). Cambridge University Press.
Chicago Style aipamenaFisher, Alec. Critical Thinking: An Introduction. Second edition. Cambridge, [England]: Cambridge University Press, 2011.
MLA aipamenaFisher, Alec. Critical Thinking: An Introduction. Second edition. Cambridge University Press, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.