Cita APA (7th ed.)
Berzsenyi, G., & Maurer, S. B. (1997). The contest problem book. Mathematical Association of America.
Cita Chicago (17th ed.)
Berzsenyi, George, i Stephen B. Maurer. The Contest Problem Book. Washington, D.C.: Mathematical Association of America, 1997.
Cita MLA (9th ed.)
Berzsenyi, George, i Stephen B. Maurer. The Contest Problem Book. Mathematical Association of America, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.