Downing, D., & Clark, J. (2003). Business statistics (4th ed.). Barron's.
芝加哥风格引文Downing, Douglas, 与 Jeffrey Clark. Business Statistics. 4th ed. Hauppauge, NY: Barron's, 2003.
MLA引文Downing, Douglas, 与 Jeffrey Clark. Business Statistics. 4th ed. Barron's, 2003.
警告：这些引文格式不一定是100％准确.