Honsberger, R. (1970). Ingenuity in mathematics. Mathematical Association of America.
Chicagoスタイル(17版)引用形式Honsberger, Ross. Ingenuity in Mathematics. Washington, DC: Mathematical Association of America, 1970.
MLA(9版)引用形式Honsberger, Ross. Ingenuity in Mathematics. Mathematical Association of America, 1970.
警告: この引用は必ずしも正確ではありません.