Dyfyniad APA

(1971). Encyclopedia of information systems and services. Edwards Bros.

Dyfyniad Arddull Chicago

Encyclopedia of Information Systems and Services. Ann Arbor, Mich: Edwards Bros, 1971.

Dyfyniad MLA

Encyclopedia of Information Systems and Services. Edwards Bros, 1971.

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