Freud, J. E. (1988). Modern elementary statistics (7th ed.). Prentice-Hall.
芝加哥风格引文Freud, John E. Modern Elementary Statistics. 7th ed. New Jersey: Prentice-Hall, 1988.
MLA引文Freud, John E. Modern Elementary Statistics. 7th ed. Prentice-Hall, 1988.
警告：这些引文格式不一定是100％准确.