Dyfyniad APA

MATHEWS MARTIN S. (1990). EXCEL 2.1 MADE EASY: IBM PC VERSION. OSBORNE MCGRAW-HILL.

Dyfyniad Arddull Chicago

MATHEWS MARTIN S. EXCEL 2.1 MADE EASY: IBM PC VERSION. NEW YORK: OSBORNE MCGRAW-HILL, 1990.

Dyfyniad MLA

MATHEWS MARTIN S. EXCEL 2.1 MADE EASY: IBM PC VERSION. OSBORNE MCGRAW-HILL, 1990.

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