Cita APA (7th ed.)

Ryser, H. J. (1963). Combinatorial mathematics. Mathematical Association of America, distributed by Wiley.

Cita Chicago (17th ed.)

Ryser, Herbert John. Combinatorial Mathematics. Buffalo: Mathematical Association of America, distributed by Wiley, 1963.

Cita MLA (9th ed.)

Ryser, Herbert John. Combinatorial Mathematics. Mathematical Association of America, distributed by Wiley, 1963.