Richards, L. E. (1978). Business statistics: Why and when. McGraw - Hill.
芝加哥风格引文Richards, Larry E. Business Statistics: Why and When. New York: McGraw - Hill, 1978.
MLA引文Richards, Larry E. Business Statistics: Why and When. McGraw - Hill, 1978.
警告：这些引文格式不一定是100％准确.