Bernd Held. (2011). Microsoft Excel functions and formulas (2nd ed.). Mercury Learning and Information.
芝加哥风格引文Bernd Held. Microsoft Excel Functions and Formulas. 2nd ed. Dulles, VA: Mercury Learning and Information, 2011.
MLA引文Bernd Held. Microsoft Excel Functions and Formulas. 2nd ed. Mercury Learning and Information, 2011.
警告：这些引文格式不一定是100％准确.