<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Peirce, Charles S. / Hartshorne, Charles / Weiss, Paul</hi> (1932): <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Collected Papers of Charles Sanders Peirce</hi>. II: Elements of Logic. Cambridge, Mass.: Harvard University Press.