Writings of Charles Sanders Peirce
- Peirce, C. S. (1931). Collected papers, Vol. I, Principles of philosophy (C. Hartshorne & P. Weiss, Eds.). Cambridge, MA: Harvard University Press.
- Peirce, C. S. (1932). Collected papers, Vol. II, Elements of logic (C. Hartshorne & P. Weiss, Eds.). Cambridge, MA: Harvard University Press.
- Peirce, C. S. (1934). Collected papers, Vol. V, Pragmatism and pragmaticism (C. Hartshorne & P. Weiss, Eds.). Cambridge, MA: Harvard University Press.
Available Online
- Peirce, C. S. (1877). The fixation of belief. Popular Science Monthly, 12 (November), 1-15.
- Peirce, C. S. (1878). How to make our ideas clear. Popular Science Monthly, 12 (January), 286-302.
Authoritative Resource on Peirce's Theory of Signs
- Short, T. L. (2007). Peirce’s theory of signs. New York, NY: Cambridge University Press.