1 Peirce, Charles Sanders, "he Collected Papers of Charles Sanders Peirce vol 7, 8. Science and Philosophy" Harvard University Press 1995
2 Peirce, Charles Sanders, "Writings of Charles S. Peirce: 1872-1878, In Kloesel Max Harold Fisch. Vol. 3" Indiana University Press 1986
3 Peirce, Charles Sanders, "Writings of Charles S. Peirce : A chronological edition Vol. 1" Bloomington: Indiana university press 1982
4 Wittgenstein, Ludwig, "Tractatus Logico-Philosophicus" Routledge & Kegan Paul 1961
5 Dillon, Brian, "Tormented Hope: Nine Hypochondriac Lives" Penguin UK 2009
6 Peirce, Charles Sanders, "The Essential Peirce. Edited by Nathan Houser Vol. 1" Indiana University Press 1992
7 Peirce, Charles Sanders, "The Essential Peirce Vol. 2" Indiana University Press 1998
8 Varela, Francisco Javier, "The Embodied Mind" The MIT Press 1991
9 Peirce, Charles Sanders, "The Collected Papers of Charles Sanders Peirce. Vol. 5, 6, In Pragmatism and Pragmaticism" Harvard University Press 1934
10 Peirce, Charles Sanders, "The Collected Papers of Charles Sanders Peirce. Vol. 1, In Principles of Philosophy" Harvard University Press 1931
1 Peirce, Charles Sanders, "he Collected Papers of Charles Sanders Peirce vol 7, 8. Science and Philosophy" Harvard University Press 1995
2 Peirce, Charles Sanders, "Writings of Charles S. Peirce: 1872-1878, In Kloesel Max Harold Fisch. Vol. 3" Indiana University Press 1986
3 Peirce, Charles Sanders, "Writings of Charles S. Peirce : A chronological edition Vol. 1" Bloomington: Indiana university press 1982
4 Wittgenstein, Ludwig, "Tractatus Logico-Philosophicus" Routledge & Kegan Paul 1961
5 Dillon, Brian, "Tormented Hope: Nine Hypochondriac Lives" Penguin UK 2009
6 Peirce, Charles Sanders, "The Essential Peirce. Edited by Nathan Houser Vol. 1" Indiana University Press 1992
7 Peirce, Charles Sanders, "The Essential Peirce Vol. 2" Indiana University Press 1998
8 Varela, Francisco Javier, "The Embodied Mind" The MIT Press 1991
9 Peirce, Charles Sanders, "The Collected Papers of Charles Sanders Peirce. Vol. 5, 6, In Pragmatism and Pragmaticism" Harvard University Press 1934
10 Peirce, Charles Sanders, "The Collected Papers of Charles Sanders Peirce. Vol. 1, In Principles of Philosophy" Harvard University Press 1931
11 Peirce, Charles Sanders, "The Collected Papers of Charles Sanders Peirce. Vol 2, In Elements of Logic" Harvard University Press 1965
12 Wittgenstein, Ludwig, "The Blue and Brown Books" Basil Blackwell 1958
13 Burkitt, Francis Crawford, "Speculum religionis, being essays and studies in religion and literature from Plato to Von Hügel, with an introduction by F.C. Burkitt.." The Clarendon press 1929
14 Furtak, Rick Anthony, "Skepticism and Perceptual Faith: Henry David Thoreau and Stanley Cavell on Seeing and Believing" 43 (43): 542-561, 2007
15 Luisi, "Percept and perceptual judgment in Peirce’s phenomenology" 3 (3): 60-70, 2006
16 Short, Thomas Lloyd, "Peirce’s Theory of Signs" Cambridge University Press 2007
17 Peirce, Charles Sanders, "Peirce on Signs" The University of North Carolina Press 1991
18 Lippitt, John, "Making Sense of Nonsense: Kierkegaard and Wittgenstein" 98 : 263-286, 1998
19 Tienne, André de, "Is Phaneroscopy as a Pre-Semiotic Science Possible?" 2 : 15-30, 2004
20 Saussure, Ferdinand de, "Cours de Linguistique Generale, In Albert Sechehaye and Albert Riedlinger" Payot 1972
21 Lawrence, Michael, "Bach & Friends: Michael Lawrence Films"
22 Liszka, James Jakob, "A General Introduction to the Semeiotic of Charles Sanders Peirce" Indiana University Press 1996