Tuttle, A. M. (1957). Elementary business and economic statistics. McGraw-Hill.
芝加哥风格引文Tuttle, Alva Maurice. Elementary Business and Economic Statistics. N.Y.: McGraw-Hill, 1957.
MLA引文Tuttle, Alva Maurice. Elementary Business and Economic Statistics. McGraw-Hill, 1957.
警告：这些引文格式不一定是100％准确.