Carruccio, E. (1970). Betti, Enrico. In C. C. Gillispie (ed.), Dictionary of scientific biography. Vol. 2, 104–106. New York: Charles Scribner's Sons.
Casselman, B. (2004). Mathematical illustrations: A manual of geometry and Post-Script. New York: Cambridge University Press.
Cauchy, A. L. (1813a). Recherches sur les polyedres. Journal de l'Ecole Polytechnique 9, 68–86.
--. (1813b). Sur les polygones et les polyedres. Journal de l'Ecole Polytechnique 9, 87–98.
Cayley, A. (1861). On partitions of a close. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 4th Series 21, 424–428.
--. (1873). On Listing's theorem. Messenger of Mathematics II, 81–89.
--. (1878). On the coloring of maps. Proceedings of the London Mathematical Society IX, 14.
Chambers, M., R. Grew, D. Herlihy, T. Rabb, and I. Woloch (1987). The Western experience, Vol. 2: The early modern period (4th ed.). New York: Alfred A. Knopf.
Clarke, A. C. (2000). The wall of darkness. In The Collected Stories of Arthur C. Clarke, 104–118. New York: Tom Doherty Associates.
Collingwood, S. D. (1898). The life and letters of Lewis Caroll (Rev. C. L. Dodgson). London: T. Fisher Unwin.
Condorcet, M. J. (1786). Eulogy to Mr. Euler (translated by John S. D. Glaus, Euler Society, 2005). In History of the Royal Academy of Sciences 1783, 37–68. Paris: Imprimerie Royale.
Connelly, R. (1977). A counterexample to the rigidity conjecture for polyhe-dra. Inst. Hautes Etudes Sci. Publ. Math. 47, 333–338.
Conway, J., P. Doyle, J. Gilman, and B. Thurston (1994). Geometry and the imagination. http://www.geom.uiuc.edu/docs/education/institute91.
Coolidge, J. L. (1963). A history of geometrical methods. New York: Dover.
Copper, M. (1993). Graph theory and the game of sprouts. Amer. Math. Monthly 100 (5), 478–482.
Coxeter, H. S. M. (1959). The four-color map problem, 1840–1890. Mathematics Teacher 52, 283–289.
--. (1988). Regular and semiregular polyhedra. In M. Senechal and G. Fleck (eds.), Shaping space: A polyhedral approach, proceedings of 1984 conference held in Northampton, MA, 67–79. Boston, Design Science Collection, Birkhauser Boston.
Crombie A. C., (1971). Descartes, Rene du Perron. In C. C. Gillispie (ed.), Dictionary of scientific biography, vol. 4, 51–55. New York: Charles Scribner's Sons.
Cromwell, P. R. (1995). Kepler's work on polyhedra. Math. Intelligencer 17 (3), 23–33.
--. (1997). Polyhedra. Cambridge: Cambridge University Press.