Dyfyniad APA

Walsh & Ellison R. (1975). Data systems: Design and management. Goodyear.

Dyfyniad Arddull Chicago

Walsh and Ellison R. Data Systems: Design and Management. California: Goodyear, 1975.

Dyfyniad MLA

Walsh and Ellison R. Data Systems: Design and Management. Goodyear, 1975.

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