Cita APA (7a ed.)

Grapo, H. H., & Rota, G. C. (1970). On the foundations of combinatorial theory: Combinatorial geometries (1a ed.). Mit Press Journals.

Cita Chicago Style (17a ed.)

Grapo, Henry H., y Gian Carlo Rota. On the Foundations of Combinatorial Theory: Combinatorial Geometries. 1a ed. Cambridge: Mit Press Journals, 1970.

Cita MLA (9a ed.)

Grapo, Henry H., y Gian Carlo Rota. On the Foundations of Combinatorial Theory: Combinatorial Geometries. 1a ed. Mit Press Journals, 1970.