Dyfyniad APA

Mansfield, R. (1997). Excel 97: For busy people. Osborne/McGraw-Hill.

Dyfyniad Arddull Chicago

Mansfield, Ron. Excel 97: For Busy People. Berkeley: Osborne/McGraw-Hill, 1997.

Dyfyniad MLA

Mansfield, Ron. Excel 97: For Busy People. Osborne/McGraw-Hill, 1997.

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