Cita APA (7th ed.)

Brualdi, R. A. (1977). Introductory combinatorics. North Holland.

Cita Chicago (17th ed.)

Brualdi, Richard A. Introductory Combinatorics. Nueva York: North Holland, 1977.

Cita MLA (9th ed.)

Brualdi, Richard A. Introductory Combinatorics. North Holland, 1977.