Salkind, C. T. (1961). The contest problem book. Mathematical Association of America.
Chicagoスタイル(17版)引用形式Salkind, Charles T. The Contest Problem Book. Washington, D.C.: Mathematical Association of America, 1961.
MLA(9版)引用形式Salkind, Charles T. The Contest Problem Book. Mathematical Association of America, 1961.
警告: この引用は必ずしも正確ではありません.