Cita APA (7a ed.)

Brualdi, R. A. (1992). Introductory combinatorics (2nd ed.). North-Holland.

Cita Chicago Style (17a ed.)

Brualdi, Richard A. Introductory Combinatorics. 2nd ed. New York: North-Holland, 1992.

Cita MLA (8a ed.)

Brualdi, Richard A. Introductory Combinatorics. 2nd ed. North-Holland, 1992.