APA način citiranja (7. izdanje)
Klein, P. D. (1981). Certainty: A refutation of scepticism. University of Minnesota Press.
Čikaški stil citiranja (17. izdanje)
Klein, Peter D. Certainty: A Refutation of Scepticism. Minneapolis: University of Minnesota Press, 1981.
MLA način citiranja (9. izdanje)
Klein, Peter D. Certainty: A Refutation of Scepticism. University of Minnesota Press, 1981.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.