APA aipamena

Klein, P. D. (1981). Certainty: A refutation of sceptisim. University of Minnesota Press.

Chicago Style aipamena

Klein, Peter D. Certainty: A Refutation of Sceptisim. University of Minnesota Press, 1981.

MLA aipamena

Klein, Peter D. Certainty: A Refutation of Sceptisim. University of Minnesota Press, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.