Cita APA (7th ed.)

Niven, I. (1965). Mathematics of choice: Or how to count without counting. Mathematical Association of America.

Cita Chicago (17th ed.)

Niven, Ivan. Mathematics of Choice: Or How to Count Without Counting. Washington, D.C.: Mathematical Association of America, 1965.

Cita MLA (9th ed.)

Niven, Ivan. Mathematics of Choice: Or How to Count Without Counting. Mathematical Association of America, 1965.