Cita APA (7a ed.)

Klein, P. D. (1981). Certainty, a refutation of scepticism. University of Minnesota Press.

Cita Chicago Style (17a ed.)

Klein, Peter D. Certainty, a Refutation of Scepticism. Minneapolis: University of Minnesota Press, 1981.

Cita MLA (8a ed.)

Klein, Peter D. Certainty, a Refutation of Scepticism. University of Minnesota Press, 1981.