Cita APA (7th ed.)

Salkind, C. T. (1961). The contest problem book. Mathematical Association of America.

Cita Chicago (17th ed.)

Salkind, Charles T. The Contest Problem Book. Washington, D.C.: Mathematical Association of America, 1961.

Cita MLA (9th ed.)

Salkind, Charles T. The Contest Problem Book. Mathematical Association of America, 1961.