Dyfyniad APA

Gottfried, B. S. (1998). Spreadsheet tools for engineers: EXCEL 97 version. Boston, Mass: WCB McGraw-Hill.

Dyfyniad Arddull Chicago

Gottfried, Byron S. Spreadsheet Tools for Engineers: EXCEL 97 Version. Boston, Mass: WCB McGraw-Hill, 1998.

Dyfyniad MLA

Gottfried, Byron S. Spreadsheet Tools for Engineers: EXCEL 97 Version. Boston, Mass: WCB McGraw-Hill, 1998.

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