Witte, R. S. (1993). Student workbook to accompany statistics (4th.ed.). HBJ.
芝加哥风格引文Witte, Robert S. Student Workbook to Accompany Statistics. 4th.ed. Orlando: HBJ, 1993.
MLA引文Witte, Robert S. Student Workbook to Accompany Statistics. 4th.ed. HBJ, 1993.
警告：这些引文格式不一定是100％准确.