Ryser, H. J. (1963). Combinatorial mathematics. Mathematical Association of America, distributed by Wiley.
Citazione stile Chigago Style (17a edizione)Ryser, Herbert John. Combinatorial Mathematics. Buffalo: Mathematical Association of America, distributed by Wiley, 1963.
Citatione MLA (9a ed.)Ryser, Herbert John. Combinatorial Mathematics. Mathematical Association of America, distributed by Wiley, 1963.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.