APA (7th ed.) Citation

Crapo, H. H., & Rota, G. (1970). On the foundations of combinatorial theory: Combinatorial geometries (Prelim. edition.). M.I.T. Press.

Chicago Style (17th ed.) Citation

Crapo, Henry H., and Gian-Carlo Rota. On the Foundations of Combinatorial Theory: Combinatorial Geometries. Prelim. edition. Cambridge, Mass.: M.I.T. Press, 1970.

MLA (9th ed.) Citation

Crapo, Henry H., and Gian-Carlo Rota. On the Foundations of Combinatorial Theory: Combinatorial Geometries. Prelim. edition. M.I.T. Press, 1970.