Letchford, S. (1977). Business mathematics and statistics (2nd.ed.). Donnington.
Chicagoスタイル(17版)引用形式Letchford, S. Business Mathematics and Statistics. 2nd.ed. London: Donnington, 1977.
MLA(9版)引用形式Letchford, S. Business Mathematics and Statistics. 2nd.ed. Donnington, 1977.
警告: この引用は必ずしも正確ではありません.