Cita APA (7th ed.)

Benjamin, A., & Quinn, J. J. (2003). Proofs that really count: The art of combinatorial proof. Mathematical Association of America.

Cita Chicago (17th ed.)

Benjamin, Arthur, i Jennifer J. Quinn. Proofs That Really Count: The Art of Combinatorial Proof. [Washington, DC]: Mathematical Association of America, 2003.

Cita MLA (9th ed.)

Benjamin, Arthur, i Jennifer J. Quinn. Proofs That Really Count: The Art of Combinatorial Proof. Mathematical Association of America, 2003.