Cita APA (7th ed.)

Brualdi, R. A. (2004). Introductory combinatorics (4th ed.). Pearson/Prentice Hall.

Cita Chicago (17th ed.)

Brualdi, Richard A. Introductory Combinatorics. 4th ed. Upper Saddle River, N.J. ; New Delhi: Pearson/Prentice Hall, 2004.

Cita MLA (8th ed.)

Brualdi, Richard A. Introductory Combinatorics. 4th ed. Pearson/Prentice Hall, 2004.