Freund, J. E., Williams, F. J., & Perles, B. M. (1993). Elementary business statistics: The modern approach (6th ed.). Prentice Hall.
芝加哥风格引文Freund, John E., Frank Jefferson Williams, 与 Benjamin M. Perles. Elementary Business Statistics: The Modern Approach. 6th ed. Englewood Cliffs, N.J.: Prentice Hall, 1993.
MLA引文Freund, John E., et al. Elementary Business Statistics: The Modern Approach. 6th ed. Prentice Hall, 1993.
警告：这些引文格式不一定是100％准确.