Dyfyniad APA

Bernd Held. (2011). Microsoft Excel functions and formulas (2nd ed.). Mercury Learning and Information.

Dyfyniad Arddull Chicago

Bernd Held. Microsoft Excel Functions and Formulas. 2nd ed. Dulles, VA: Mercury Learning and Information, 2011.

Dyfyniad MLA

Bernd Held. Microsoft Excel Functions and Formulas. 2nd ed. Mercury Learning and Information, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.