Richards, L. E. (1978). Business statistics: Why and when. McGraw - Hill.
Chicagoスタイル(17版)引用形式Richards, Larry E. Business Statistics: Why and When. New York: McGraw - Hill, 1978.
MLA(9版)引用形式Richards, Larry E. Business Statistics: Why and When. McGraw - Hill, 1978.
警告: この引用は必ずしも正確ではありません.