Niven, I. (1965). Mathematics of choice: Or how to count without counting. Mathematical Association of America.
Lua i Stíl Chicago (17ú heag.)Niven, Ivan. Mathematics of Choice: Or How to Count Without Counting. Washington, D.C.: Mathematical Association of America, 1965.
Lua MLA (9ú heag.)Niven, Ivan. Mathematics of Choice: Or How to Count Without Counting. Mathematical Association of America, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.